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Omniflex Maxiflex P3 M1260E, User Manual

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Omniflex Maxiflex P3 M1260E User Manual Download Page 24

 

 

 

Maxiflex P3 PAC  User Manual 

24 

-© Omniflex 

UMM126XR18.pdf 

 

 

 

4.3  Installing the CPU on the Maxiflex base 

Install  the  CPU  into  the  CPU  position  ONLY  of  any  Maxiflex  Master  Base.  CPUs must  only 
be installed and removed from the base with the power off. 

Refer  to  the  Maxiflex  bases  General  Instructions  for  more  detail  on  base  layout,  module 
insertion and module removal. Please refer to Figure 2.2 for the CPU position. 

See Section 5 for recommended system configuration in dual redundant applications 

 

 

Figure 4.2: Layout of the 7I/O Master Base 

 

4.4  Connecting the Programming port (all models) 

Connect  the  P3/A3  CPU  to  a  standard  PC  compatible  serial  port  using  the  OMNIFLEX 
supplied standard programming cable (Part Number M1831A supplied separately). 

If another cable is to be used, the following connections will apply: 

Signal Name 

DB-9 

FCC-68 Pin No.

 

Rx Data from P3 

2 

4 

Tx Data to P3 

3 

1 

Ground Reference 

5 

2 

All other pins are reserved and must not be connected. 

Table 4.1: Pin allocation of DB-9 connector on program cable and FCC-68 socket on P3 CPU’s 

 

4.5  Connecting the Serial port (all models) 

The  selection  of  either  RS232  or  RS485  is  accomplished  by  specific  wiring  of  the  serial  port 
connector. No internal links need be changed to select between RS232 and RS422/485. 

The serial port of the CPU is not isolated. 

Summary of Contents for Maxiflex P3 M1260E

Page 1: ...Maxiflex P3 Process Automation Controller CPU User s Manual...

Page 2: ...new DIT access function blocks to ISaGraf programming extensions March 2005 10 Added remote I O support redundant options October 2005 11 Added Network Offset screen grab to section 10 4 2 August 200...

Page 3: ...om patent or other protective rights of Omniflex or others 3 Although every intention is made to ensure that performance figures and data are accurate the company reserves the right to alter without n...

Page 4: ...rt and Conet c Twisted Pair Network Port standard features only M1265A A3e CPU with RS232 485 Serial Port and Conet e 10 100 Ethernet Network Port standard features only M1267B P3e R CPU with RS232 48...

Page 5: ...OSI 7 layer model these CPU s includes powerful inter network routing capability for retrieving data from the corners of the factory in very large geographically spread out installations This capabil...

Page 6: ...onnecting the Watchdog Relay Output Contact 25 4 9 Applying power for the first time 26 4 10 Front Panel LED Indicators Explained 26 5 I O Module Management Scanning Explained 28 5 1 Number of I O Mod...

Page 7: ...ut Module 48V Input 52 8 The Subscription Service Explained 55 8 1 Introduction to Subscriptions 55 8 2 Setting up subscriptions 55 8 3 Number of subscriptions allowed 57 8 4 Subscription Application...

Page 8: ...14 2 Step 2 Set Remote I O DIP Switch Addresses 105 14 3 Step 3 Power up the Primary Controller and Remote I O Racks 105 14 4 Step 4 Check Remote I O Activity 105 14 5 Step 5 Configure Primary Control...

Page 9: ...Front Panel LED Indicator Functions Explained 27 Table 6 1 DIT Address Map of the P3 CPU and Master Rack in Extended DIT Address Mode 1 30 Table 6 2 DIT Address Map of the Expander Rack in Extended D...

Page 10: ...Maxiflex P3 PAC User Manual 10 Omniflex UMM126XR18 pdf Table 14 1 Remote I O Module Address Switch Settings 105...

Page 11: ...ist of 65 535 data registers of 16 bits each that contain the dynamic and configuration data for the product Each register is accessed by its DIT Address in the table 0 to 65535 The DIT is used as a f...

Page 12: ...oller Process Automation Controller A Process Automation Controller PAC consists of a conventional Maxiflex Base equipped with a Power Supply P3 CPU and local I O Modules if required If this Controlle...

Page 13: ...t types of slots PSU Slots contain PSU Modules CPU Slots contain CPU Modules I O Slots contain IOM and NIM Modules Standby Mode An operating mode of one of the two dual redundant controllers in a dual...

Page 14: ...required by the TCP IP protocols Each process that wants to communicate with another process via TCP IP identifies itself to the TCP IP protocol suite by one or more ports A port is a 16 bit number u...

Page 15: ...Indicators A full description of the function of each indicator is given in section 4 10 NAME COLOUR M1260E P3 M1261E P3c M1262F P3e M1267B P3e R CPU OK Green Y Y Y Y I O OK Green Y Y Y Y RUN Green Y...

Page 16: ...ailable on this port allowing easy connection to third party Modbus Slave devices c Conet s protocol peer to peer is available on this port for integration into Conet Intranets Conet s connection allo...

Page 17: ...ove 2 4 Dual Redundant Operation The P3e R CPU is designed to operate in dual redundant configuration In this configuration each CPU must be mounted on its own local Master Base with its own Power Sup...

Page 18: ...ce stored in the queue PC based clients such as the Omniflex Conet OPC Server are able to poll this queue over the network and extract the queued events for analysis It is also possible for a user app...

Page 19: ...ations range from simple data scaling to analogue control systems and programmable logic control The user program has access to the following features in the CPU Direct access to I O modules in the sy...

Page 20: ...e configuration This configuration is done in the CPU and the configuration is stored in the CPU The CPU manages the configuration of all IOM s If an IOM is exchanged then the CPU reconfigures the rep...

Page 21: ...not in the CPU If an Intelligent Module is exchanged then the replacement module must be re configured reprogrammed This can be done through the CPU s programming port An example of an Intelligent Mod...

Page 22: ...M APPLICATION LAYER CPU PORT 0 COM PORT NIM SPECIFIC DATA LINK LAYER USER PROGRAM APPLICATION LAYER I O SLOT 1 NIM I O PROCESSING I O SLOT 2 IOM To Other Slots PRESENTATION LAYER PRESENTATION LAYER MA...

Page 23: ...ed Enable the DIT battery backup feature if required by connecting the battery link accessible through the front door of the CPU module The battery link is shipped connected To activate the battery pu...

Page 24: ...e Programming port all models Connect the P3 A3 CPU to a standard PC compatible serial port using the OMNIFLEX supplied standard programming cable Part Number M1831A supplied separately If another cab...

Page 25: ...Board and interconnecting cable Refer to C6169 Installation Guide for further details Pin number Description 2 Signal 5 Cable screen S 8 Signal 1 3 4 6 7 and 9 No connection Table 4 3 Pin allocation o...

Page 26: ...emove forcing from ISaGraf Workbench RUN GREEN ON User program is running OFF No User Program is running FLASHING Indicates the CPU is in redundant configuration and is currently in Standby mode BATT...

Page 27: ...re is activity on the Sync Link SYNC 100 YELLOW ON The Sync Link is operating at 100Mbit s OFF There is a problem with the Sync Link Table 4 4 Front Panel LED Indicator Functions Explained NOTE On Pow...

Page 28: ...s are accessible from both controllers in a dual redundant configuration 5 2 Automatic I O Module Identification The CPU automatically identifies each I O module installed in a Maxiflex system both in...

Page 29: ...automatically read from the Input modules and stored in the CPU s Dynamic Data area of the DIT Table and output status information is automatically read from Dynamic Data area of the DIT Table and wr...

Page 30: ...data in the CPU and all of its I O modules Some of these register addresses expose registers in the Intelligent I O modules of the system as if they are part of the CPU s DIT This is known as extended...

Page 31: ...99 57 999 No of Registers 30 000 5 499 4 000 4 000 4 000 4 000 4 000 4 000 4 000 Table 6 3 DIT Address Map of the CPU and Master Rack in Extended DIT Address Mode 2 The default setting for the extende...

Page 32: ...0 To read the Alive Counter of the M1585B NIM module in slot 2 which is DIT register 23 in the DIT layout of the NIM module read CPU DIT address 32 023 The M1580A Serial NIM has a total of 4000 DIT re...

Page 33: ...t Analogue Outputs 16 Analogue Inputs 16 Digital Outputs 4 Digital Inputs 4 Configuration 100 Table 6 4 I O Slot DIT data space allocation The Inputs and Outputs from all the modules are grouped toget...

Page 34: ...100 Table 6 5 I O DIT Address Map for P3 A3 CPUs Local I O Rack Remote Master Rack 1 Remote Expansion Rack 1 I O Slot 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 Analogue Outputs 756 772 788 804 820 836 852...

Page 35: ...s 2 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 Table 6 7 I O DIT Address Map for P3 A3 CPUs Remote I O Rack 2 Remote Master Rack 3 Remote Expansion Rack 3 I O Slot 1 2 3 4 5 6 7 8 9 1...

Page 36: ...s 2 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 Table 6 9 I O DIT Address Map for P3 A3 CPUs Remote I O Rack 4 Remote Master Rack 5 Remote Expansion Rack 5 I O Slot 1 2 3 4 5 6 7 8 9 1...

Page 37: ...s 2 100 100 100 100 100 100 100 100 100 100 100 100 100 100 100 Table 6 11 I O DIT Address Map for P3 A3 CPUs Remote I O Rack 6 Remote Master Rack 7 Remote Expansion Rack 7 I O Slot 1 2 3 4 5 6 7 8 9...

Page 38: ...Solar 3A Charger Power Supply DIGITAL INPUT DATA SPACE DIT Offset Digital Inputs where individual inputs are allocated as follows 0 Bit 0 LSB First Scan Bit 1 Primary Supply Status 1 Program in First...

Page 39: ...tus 1 Sensor is connected Bit 3 Battery Level Warning 1 Battery Level Low Warning Alarm Bit 4 Battery Level Critical 1 Battery Level Low Critical Alarm Bits 5 to 16 will read as 0 ANALOGUE INPUT DATA...

Page 40: ...6A 32DI 32 way Digital Input Module DIGITAL INPUT DATA SPACE DIT Offset Digital Inputs 1 16 where individual inputs are allocated as follows 0 Input 1 Bit 0 LSB Input 2 Bit 1 Input 3 Bit 2 Input 4 Bit...

Page 41: ...Data Spaces are unused by this module Example Input 5 of an M1330A module installed in Local Slot 3 can be read from DIT Address 5012 Bit 4 Output 5 of an M1330A module installed in Local Slot 3 can...

Page 42: ...1 Bit 4 Output 22 Bit 5 Output 23 Bit 6 Output 24 Bit 7 Output 25 Bit 8 Output 26 Bit 9 Output 27 Bit 10 Output 28 Bit 11 Output 29 Bit 12 Output 30 Bit 13 Output 31 Bit 14 Output 32 Bit 15 MSB All ot...

Page 43: ...ting the input range 0 to 100 All other Data Spaces are unused by this module Example Input 3 of an M1403A module installed in Local Slot 6 can be read from DIT Address 2598 7 14 M1412A 8AO 8 way Anal...

Page 44: ...t Input Type Bit 15 Unused will read as 0 Digital Inputs 17 32 where individual inputs are allocated as follows 1 Bit 0 Input 3 High Limit Bit 1 Input 3 High High Limit Bit 2 Input 3 Low Limit Bit 3 I...

Page 45: ...ing 0 No Input Type Selected 40 Input is 0 10 Volts 41 Input is 2 10 Volts 42 Input is 0 5 Volts 43 Input is 1 5 Volts 44 Input is 0 1 Volt 60 Input is 0 20 mA 61 Input is 4 20 mA 62 Input is 0 50 mA...

Page 46: ...6 Input 6 Low Limit 57 Input 6 Low Low Limit 58 Input 6 Deadband 59 Input 7 High High Limit 60 Input 7 High Limit 61 Input 7 Low Limit 62 Input 7 Low Low Limit 63 Input 7 Deadband 64 Input 8 High High...

Page 47: ...guration Corrupted Bit 14 Input 2 Incorrect Input Type Bit 15 Input Burnout Digital Inputs 17 32 where individual inputs are allocated as follows 1 Bit 0 Input 3 High Limit Bit 1 Input 3 High High Lim...

Page 48: ...d 1 Thermocouple Type K 2 Thermocouple Type J 3 Thermocouple Type E 4 Thermocouple Type N 5 Thermocouple Type T 6 Thermocouple Type R 7 Thermocouple Type S 8 Thermocouple Type B 20 milliVolts MilliVol...

Page 49: ...nal CJC is selected this register must be set to the external CJC temperature in tenths of a degree C or F as set in Temperature Scale 29 Input 1 High High Limit set in display format 30 Input 1 High...

Page 50: ...uration Corrupted Bit 14 Input 2 Incorrect Input Type Bit 15 Unused will read as 0 Digital Inputs 17 32 where individual inputs are allocated as follows 1 Bit 0 Input 3 High Limit Bit 1 Input 3 High H...

Page 51: ...ut 4 Type 20 Input 5 Type 21 Input 6 Type 22 Configuration Registers Reserved set to 0 23 25 where Input Type is chosen from one of the following 0 No Input Type Selected 100 Input is PT 100 101 Input...

Page 52: ...ital Inputs 17 32 where individual inputs are allocated as follows 1 Input 17 Bit 0 LSB Input 18 Bit 1 Input 19 Bit 2 Input 20 Bit 3 Input 21 Bit 4 Input 22 Bit 5 Input 23 Bit 6 Input 24 Bit 7 Input 2...

Page 53: ...put and Analogue Output Data Spaces are unused by this module CONFIGURATION DATA SPACE DIT Offset Reserved 0 Input Sense Inputs 1 to 16 Bit 0 maps to input 1 1 Input Sense Inputs 17 to 32 Bit 0 maps t...

Page 54: ...ut 12 Off Delay Time 47 Input 13 Off Delay Time 48 Input 14 Off Delay Time 49 Input 15 Off Delay Time 50 Input 16 Off Delay Time 51 Input 17 Off Delay Time 52 Input 18 Off Delay Time 53 Input 19 Off D...

Page 55: ...agazine through your newsagent You establish a magazine subscription by telling the newsagent which magazine you want your home address and how often you want it and then the newsagent takes the respo...

Page 56: ...ns can be configured between nodes in different directions each of which would operate independently of any other This provides far more flexibility than typical Poll Response Master Slave methods Dat...

Page 57: ...ding or source node from which the required data originates This can be expressed as a local network address plus the local slot and port to which the network is connected or it can be expressed as a...

Page 58: ...an be 10 seconds apart Local Port Number 0 The CONET network is Port 0 on the CPU Destination DIT Start Address 6000 This is the DIT Address where we want to start writing the received data Source Nod...

Page 59: ...time stamped event information in non real time from a Maxiflex System configured as a Sequence of Events monitor that is detecting events in Real Time The Maxiflex System makes use of the M176xA 32S...

Page 60: ...al performance i e how often a device can be polled for data It is possible to adjust the poll rate per query the delay between queries as well as the delay between the entire polling cycle The Modbus...

Page 61: ...ential if the Slave device cannot cope with queries sent at full rate This delay must be specified in milliseconds E g if a delay of 100ms is required then the register must be set to 100 Inter poll D...

Page 62: ...ic 250ms Cyclic 500ms Cyclic 1000ms Cyclic 2000ms Cyclic 5000ms Set disable to ensure the query is not executed at all Set One shot if its to be triggered manually Set As fast as possible or any other...

Page 63: ...15 The DIT start bit specifies where in the DIT start register the digital functions 1 2 5 and 15 begin accessing the desired bits Table 10 1 Modbus Master Query Settings 10 4 Query Triggers Query Tr...

Page 64: ...the Last Failed Query Refer to the Detailed DIT Layout for the DIT Location of this status register The Table below lists the various status codes for any given query Status Description 0 Query Messag...

Page 65: ...you wish to implement some additional calculation or control The P3 CPU can be programmed in any of the IEC61131 3 programming languages using the Omniflex ISaGraf Programmer s Workbench Refer to the...

Page 66: ...at are ON 1 ON 1 2 ON 2 3 ON 4 4 ON 8 5 ON 16 In this example an address of 2 is selected Switch 6 reserved always leave switched off Switch 7 Default Conet s 19200 baud Protocol Select Switch 7 ON Co...

Page 67: ...witch 7 to ON and 8 to OFF on the serial port address selection switch This port is then configured as a Conet s port operating at 19 200 baud with 8 data bits no parity and 1 stop bits Switches 1 to...

Page 68: ...utility It is also possible to configure a P3 CPU through any of its communications ports that have access to the DIT using any software capable of writing to the DIT registers of the CPU The full DIT...

Page 69: ...f you are using a laptop that is not equipped with a serial port most USB to RS232 converter products available can be used Figure 11 2 Location of Programming Port Ensure that the Omniset software ut...

Page 70: ...ow The COM Port should reflect the selected COM port in your PC 2 The Connection Information Group should now be properly displayed If you are not connected or the product type is not recognised then...

Page 71: ...he configuration in your P3 target matches the configuration in the configuration file loaded in Omniset At the end any of these actions you will be given the opportunity to elect to stay in Synchroni...

Page 72: ...tus registers identify any mismatches between the four I O Module Lists and the actual modules installed in each rack of the system The eight I O Module User Prog Status registers identify the mismatc...

Page 73: ...Data Group shows the current time and date the time and date of the last power down and the time and date of the last power up To set the real time clock write the current time and date to the relevan...

Page 74: ...Group 11 9 1 2 Modbus Data Register Mapping The Modus protocol supports a number of different types of data viz Digital Status Inputs Coil Outputs Input Registers and Holding Registers These Modbus Da...

Page 75: ...1 3 Once the protocol selection has been made the rest of the Modbus Master configuration is done in the Modbus Master set of subgroups Figure 11 4 Configuring Modbus Master Queries It is necessary to...

Page 76: ...is serial port The baud rate etc for this port is then set in the DIT 11 10 Configuring the Ethernet Network Port 11 10 1 Protocols supported simultaneously The Ethernet port on the P3e CPU s runs the...

Page 77: ...ess etc in Omniset 11 10 3 Assigning a Node Address Both the Modbus TCP and the Conet e protocols also require a Node address to be specified sometimes called Unit ID or Slave Address This address is...

Page 78: ...ming is IEC61131 3 The Maxiflex P3 CPU together with the Application Workbench conforms to this IEC standard for programming languages 12 1 2 The IEC61131 3 Programming Languages The IEC61131 3 standa...

Page 79: ...IL 12 2 Programming the Maxiflex P3 CPU The Maxiflex P3 CPU can be programmed in any of the supported languages with the aid of the Omniflex ISaGraf Programmer s Workbench For program development the...

Page 80: ...tup and then choose the desired Conet Port and Target Address for communicating with the P3 CPU Programming can be performed over Conet s through a serial port on the computer Conet c through a Conet...

Page 81: ...settings match the following 12 4 3 Compiler Options Ensure that the following compiler options are selected in your Application Workbench for use with your Maxiflex P3 CPU 1 From within your open pr...

Page 82: ...ect in accordance with the physical layout of modules installed on the Maxiflex Bases of your target system If the modules in the project do not match the modules on the Maxiflex base then your progra...

Page 83: ...4 Slot No Remote 5 Slot No Remote 6 Slot No Remote 7 Slot No 6 6 7 7 8 8 9 9 10 10 11 11 12 12 13 13 14 14 15 15 16 PSU 17 1 18 2 19 3 20 4 21 5 22 6 23 7 24 8 25 9 26 10 27 11 28 12 29 13 30 14 31 1...

Page 84: ...o Remote 5 Slot No Remote 6 Slot No Remote 7 Slot No 58 10 59 11 60 12 61 13 62 14 63 15 64 PSU 65 1 66 2 67 3 68 4 69 5 70 6 71 7 72 8 73 9 74 10 75 11 76 12 77 13 78 14 79 15 80 PSU 81 1 82 2 83 3 8...

Page 85: ...e installed in any unused slots 4 Select Set Board Equipment from the Edit menu This selection can also be made by double clicking the Slot Number 5 The Application Workbench separates I O modules tha...

Page 86: ...available when editing a program in the FBD language or by entering these functions as text in the ST or IL languages NOTE These functions are implemented immediately and are not synchronised to the...

Page 87: ...nded DIT Range Use the MxDIT_CPY function to copy extended DIT s to from an unused local DIT area 12 6 1 3 DITBITRD Read a bit from a DIT Arguments Name In Out Type Description DIT IN Integer The DIT...

Page 88: ...T register This function cannot be used to access the extended DIT Range Use the MxDIT_CPY function to copy extended DIT s to from an unused local DIT area 12 6 1 5 DITRDD Read a double word from the...

Page 89: ...ouble word from the DIT swapped Arguments Name In Out Type Description DIT IN Integer The DIT Register Address from which to read the double word DVAL OUT Integer The 32 bit double word read in revers...

Page 90: ...gister DIT and DIT 1 Description Use this function to read a 32 bit IEEE floating point real number from a local DIT register NOTE the word order for a real number read from DIT register n is as follo...

Page 91: ...number read from DIT register n is as follows DIT n Least significant word DIT n 1 Most significant word This function cannot be used to access the extended DIT Range 12 6 1 12 DITWRRX Write a real nu...

Page 92: ...ccess the extended DIT Range 12 6 1 14 DITWRT Write a timer to the DIT Arguments Name In Out Type Description DIT IN Integer The DIT Register Address at which to write the timer TVAL IN Timer The time...

Page 93: ...t Type Description DIT IN Integer The DIT Register Address to which the message will be written LEN IN Integer The length of the message string or number of characters MESS IN Message Message written...

Page 94: ...ule Arguments Name In Out Type Description VAL IN Integer Value of byte 0 255 OFFSET IN Integer Byte offset in the memory map of the module SLOT IN Integer I O slot where the module is installed F OUT...

Page 95: ...n is not necessary 12 6 2 Using DIT Virtual I O Modules to access data in the DIT In the library of Maxiflex I O Modules are a number of virtual modules that do not represent actual Maxiflex Modules b...

Page 96: ...Maxiflex P3 PAC User Manual 96 Omniflex UMM126XR18 pdf 12 6 2 2 MxDIT_DO Use this Virtual I O Module to write 16 Boolean outputs to the individual bits of a single local DIT register...

Page 97: ...Maxiflex P3 PAC User Manual 97 Omniflex UMM126XR18 pdf 12 6 2 3 MxDIT_AI Use this Virtual I O Module to read 8 integers from a contiguous block of 8 local DIT Registers...

Page 98: ...s 12 6 2 5 MxDITCPY Use this Complex Equipment Virtual I O Module to copy a block of DIT registers from one place to another This module can be used to copy blocks of DIT registers to from the slower...

Page 99: ...and function blocks available in the Application Workbench some additional Function Blocks such as Auto tuning PID control blocks are available for the Maxiflex P3 CPU Details of these function block...

Page 100: ...st comply with the requirements of a standard such as IEC61508 In some sense high availability and Functional Safety are related in that both concepts are concerned with the detection of failures and...

Page 101: ...dundant System Architecture Overview The P3 R Redundant Controller is designed for applications where dual redundant CPU s are required connected to common Inputs and Outputs The dual redundant networ...

Page 102: ...using 32 channel I O modules Both controllers read the same input information from the common I O via the Remote I O processors on each remote base in the system Only the active controller writes dat...

Page 103: ...tus and make it available to Secondary Controller Check for change over instruction to Active from Secondary Controller Read Health Status from Secondary Controller Failure This mode of operation is a...

Page 104: ...this parameter that determines which controller operates in the Active mode The health status is dependant upon the following three factors 13 4 3 1 Status of Supervisory Communications A controller...

Page 105: ...by the Address set on the RIO NIM If the RIO NIM address is set to 1 then the P3 CPU will act as the primary controller If the RIO NIM address is set to 2 then the P3 CPU will act as the Secondary Co...

Page 106: ...n the Data Interchange Table DIT into up to three blocks of any length You then configure the address and size of these Sync Blocks in the primary controller as shown below Figure 14 1 Setting the Syn...

Page 107: ...hould be ON on both controllers and their SYNC LINK LED s should be on flashing OFF periodically to indicate activity on the Sync Link 14 10 Step 10 Check Remote I O Activity on Secondary Controller C...

Page 108: ...ED will be on steady The RUN LED on the standby controller will be OFF if the controller is not ready to run or flashing if it is in standby ready to run NOTE Unplugging the Sync Link cable will not c...

Page 109: ...no longer able to control the Primary changeover because the Secondary is in control 6 Change the Force Primary Failure setting from True to False 7 The Primary should once again resume control and t...

Page 110: ...icator on the front of the CPU lights 15 2 Battery Replacement Procedure To replace the internal battery proceed as follows 1 Turn off power from the Maxiflex Base 2 Remove the CPU from the Base 3 Uns...

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