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18

 

Curtis 1030 Acuity Manual, 

Rev. C

SDO Response (SDO-MISO)

An SDO request is always acknowledged with a response message from the 
Acuity. The Acuity can issue two kinds of response messages: a normal response 
or, in case of an error in the request SDO, an Abort SDO Transfer message.

SDO-MISO  

(sent by the Acuity in response to the system master)

 

Byte 1 

Byte 2 

Byte 3 

Byte 4 

Byte 5 

Byte 6 

Byte 7 

Byte 8

 

Control 

CAN Object 

Sub-index 

Data: either the requested Read values, 

 

 

Index 

 

or the actual Write values, or an error code

The first data byte of the response contains an acknowledge code, which 

depends on the type of transfer that was initially requested. 

 

Action

 

Byte 1 

  

Value 

  Read Response 

40h 

  Write Acknowledge 

60h 

  Abort SDO 

80h 

Data bytes 2, 3, and 4 hold the CAN Object index and sub-index of the 

request SDO.

If the SDO was a read command (a request for data from the Acuity), 

data bytes 5 through 8 will be filled with the requested values, with the least 
significant byte is data byte 5 and the next least significant in byte 6 and so 
forth. All unused bytes are set to 0.

If the SDO was a write command, data bytes 5 through 8 will return back 

the actual value written in bytes 5

 

–

 

8. In this way, if the Acuity needs to limit or 

round-down the SDO write request, the master will know—because the return 
value will be different than the sent value.

If the SDO-MOSI did not properly read or tried to access a parameter 

improperly, an Abort SDO Transfer will be sent. Data bytes 5 through 8 will 
be filled with a 32-bit error code:   

 

06020000h = Object does not exist  

 

06010002h = Attempt to write to a read only object. 

Types of SDO objects

There are three types of SDO objects: Communications Profile Objects (address 
range 1000h), Device Parameter  Objects (address range 5100h), and Device 
Monitor Objects (address range 5200h). Communications Profile Objects are 
described in this section; Device Parameter Objects and Device Monitor Objects 
have sections of their own. The following definitions apply to all the objects.

Access

  RO = Read Only access. RW = Read/Write access.

Index

  The CAN address that is used to access this object.

Sub-index

  Some objects have several associated values. In these cases,  

a sub-index is used to access each component of the object.

6 — SDO COMMUNICATIONS

Содержание Acuity 1030

Страница 1: ...ange without notice 2017 Curtis Instruments Inc Curtis is a registered trademark of Curtis Instruments Inc The design and appearance of the products depicted herein are the copyright of Curtis Instrum...

Страница 2: ...mputer 7 Configuring the Acuity 8 Power prover 9 Handling historical data 10 Programming the Acuity 12 4 CANopen COMMUNICATIONS 13 Minimum state machine 13 Baud rates 13 Node addresses 13 Standard mes...

Страница 3: ...ES fig 1 Curtis Acuity 1 fig 2 Mounting dimensions 3 fig 3 Typical installation 4 TABLES table 1 Communication profile objects 19 table 2 Device parameter objects 20 table 3 Device monitor objects 23...

Страница 4: ...t uses a weighted average of ampere hour counting and voltage under load measurements 3 Witness data that demonstrates the battery has been operated within the conditions of its warranty 3 Since Acuit...

Страница 5: ...PC Power Prover mode CANopen Convenience The Acuity is CANopen compliant responding to the standard NMT PDO and SDO communications as well as the DS301 required identity and stan dard objects The Curt...

Страница 6: ...X ALLOWABLE MENISCUS 3mm MAX CAN CONNECTOR Pin 1 Pin 2 TEMP SENSOR CABLE 960 15 605 15 125 15 940 15 179 30 SEE NOTE 2 CURRENT SENSOR Arrow shows direction of discharge current 44 54 POWER CABLES B Re...

Страница 7: ...d to pass through the current sensor de pending on the battery configuration and location of the current sensor Pass the end of the battery cable through the opening of the current sensor making sure...

Страница 8: ...t least one meter away from the battery The termination resistors on a cable should match the nominal impedance of the cable ISO11898 requires a cable with a nominal impedance of 120 therefore you sho...

Страница 9: ...BCANI 01 and mating harness Curtis p n 17668357 Connect bullet connectors on Acuity to mating bullet con nectors on harness Connect sub D connector on harness to mating sub D connector on Peak dongle...

Страница 10: ...en the default Peak dongle is chosen and the baud rate and node ID match the Acuity Acu Set will automatically display the Power Prover tab If this did not happen review the Baud Rate and CAN Node ID...

Страница 11: ...e on the right side of the screen is used for internal purposes only 2 A configuration file that has been previously stored on the computer can be retrieved and programmed into the Acuity Click on Loa...

Страница 12: ...computer The Power Prover screen contains the following functions Select Scale Two pull down menus allow you to select the voltage scale and the current scale to be displayed on the computer Select Da...

Страница 13: ...1 View Historical Data Displays the raw data for each Acuity parameter in tabular form The battery parameters plotted using Select Parameters to Plot are State of Charge Temperature Ah Delivered Retu...

Страница 14: ...Curtis 1030 Acuity Manual Rev C 11 1 View Historical Data 2 Battery Cycles History 3 Battery Current Profile...

Страница 15: ...History To File Stores data records from Acuity s memory to a file on the computer in ahr format Update History File Updates stored history file with new data This function also providesanoptionforcre...

Страница 16: ...om the Acuity are transmitted in this state although the Acuity listens to the CANbus When the Acuity has completed its startup and self tests it issues an initialization heart beat message and automa...

Страница 17: ...sed for arbitration on the bus The COB ID with the lowest value gets priority and wins arbitration Consequently NMT messages have the highest priority of the standard message types and the heartbeat h...

Страница 18: ...defines whether this NMT is for all slaves on the bus data byte 00h or for a specific node data byte Node ID of the Acuity Heartbeat messages The heartbeat message is a very low priority message perio...

Страница 19: ...ery Battery Battery Temper Temper Not Used SoC Voltage Voltage Current Current ature ature LSB MSB LSB MSB LSB MSB Battery Voltage Unsigned 16 bit integer Resolution is hundredths of volts Example A v...

Страница 20: ...byte CAN Object sub index and up to 4 bytes of valid data This format is CANopen compliant SDO MOSI received from the system master Byte 1 Byte 2 Byte 3 Byte 4 Byte 5 Byte 6 Byte 7 Byte 8 Control CAN...

Страница 21: ...6 and so forth All unused bytes are set to 0 If the SDO was a write command data bytes 5 through 8 will return back the actual value written in bytes 5 8 In this way if the Acuity needs to limit or r...

Страница 22: ...ter 1008h 00h RO 1 0 3 0 Model Number Four ascii characters 1030 1009h 00h RO 0 0 0 1 Hardware Version Four ascii characters 100Ah 00h RO 0 0 0 1 Software Version Four ascii characters 101Bh 00h RO 5...

Страница 23: ...4 1 5105h 00h RW value D O D Depth of Discharge 5106h 00h RW 1 2 C E 1 Charge Efficiency at high rates 2 Charge Efficiency at low rates 5107h 00h RW LSB MSB C F Charge Full in mVPC 5108h 00h RW LSB MS...

Страница 24: ...ry AGM 185 257 AGM Discovery EVGC8A A 512 Gel MK Batteries M24 65534 Custom parameters Battery ID 5103h Battery can be assigned an identification number consisting of up 12 characters Depth of Dischar...

Страница 25: ...quire a keyword to be sent along with the value to be changed Keywords consist of one or more ASCII characters Letters are case sensitive To permanently store configurable parameters into non volatile...

Страница 26: ...ry capacity Binned Ah 5209h There are ten ranges of discharge rates Each sub index 00 09h holds the number of Ah discharged at that rate Historical records A historical record is generated when one of...

Страница 27: ...Lowest battery voltage measured during this interval LSB 03h byte 13 Lowest battery voltage measured during this interval MSB 03h byte 14 Current measured at highest voltage signed byte units of 10A 0...

Страница 28: ...nt see Byte 42 51 chart below 12h byte 48 Event dependent see Byte 42 51 chart below 12h byte 49 Event dependent see Byte 42 51 chart below 12h byte 50 Event dependent see Byte 42 51 chart below 12h b...

Страница 29: ...records are generated for four different events see page 23 To find the precise historical data location where the data cycle has been recorded use the following steps This way data for any cycle num...

Страница 30: ...4 byte block within the record Sub index 0h to 15h can be used to retrieve all 64 bytes of data Example The following SDO command will read historical record number 0104h Sub index 02h points to Byte...

Страница 31: ...ted to the battery protection with inverted polarity Short circuit All inputs and outputs except CANbus shall withstand protection continous short circuit to B or B CANbus Isolation Eliminates ground...

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