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Milltronics PL-533, Инструкция по эксплуатации

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A3.2: Check the rack number (P752) on the Milltronics device; some Allen-Bradley

PLCs can accept only a limited number of racks. Try setting the rack number to a
lower available rack number.

A3.3: Check that no other devices connected to this remote I/O link have been set to

the same rack number and starting group as the Milltronics device.

A3.4: Make sure the Milltronics device is connected and terminated correctly and in

agreement with all Allen-Bradley remote I/O wiring practices (please contact your
Allen-Bradley representative for the latest guidelines).

A3.5: Make sure the termination resistor switch on the SmartLinx module is set

correctly. Improper termination can interfere with proper remote I/O operation.

Q4:

Choosing the remote I/O Autoconfigure from my PLC programming
software doesn’t show the Milltronics device on the remote I/O link.

A4.1: Check the baud rate setting (P751) on the Milltronics device; it should match the

baud rate of the remote I/O scanner port on the PLC.

A4.2: Check the rack number (P752) on the Milltronics device; some Allen-Bradley

PLCs may accept only a limited number of racks. Try setting the rack number to
a lower available rack number.

A4.3: Try manually adding the Milltronics device to the PLC remote I/O scan list. If the

problem persists, contact Milltronics technical support.

Q5:

The Milltronics device indicates it is being scanned, but the PLC indicates
a rack fault at that address.

A5.1:  Check the rack size setting (P754); make sure it matches the rack size in the

PLC’s remote I/O scan list.

Q6:

My PLC is scanning the Milltronics device with no rack faults, but the data
I’m reading makes no sense.

A6.1: Make sure the PLC is actually addressing the Milltronics device, and that no

other units are addressed to the same remote I/O rack number and starting
group. The PLC might be reading another device at the same rack number and
starting group.

A6.2: Check the information you’ve written to the discrete output area or block transfer

write area. Most of the information returned depends on what (configuration)
information was written to the Milltronics device.

PL-533

24

Milltronics SmartLink  3/31/97 1:16 PM  Page 24

Содержание PL-533

Страница 1: ...Technology based Customer driven March 1997 Instruction Manual PL 533 33455330 Rev 1 0 for Allen Bradley Remote I O Interface Module ...

Страница 2: ...sales support For more details on our products and service please contact us and we will provide you with a listing of the offices or representatives nearest you Canada 1954 Technology Dr P O Box 4225 Peterborough Ontario Canada K9J 7B1 Tel 705 745 2431 Fax 705 741 0466 U S A 709 Stadium Drive Arlington Texas U S A 76011 Tel 817 277 3543 Fax 817 277 3894 England Oak House Bromyard Road Worcester E...

Страница 3: ...ation 7 Application Layer 8 Parameter Values Numeric values Split values Text messages Relay function codes Block Transfers Block Transfer Write Block Transfer Read Discrete I O Discrete Output Words Discrete Input Words Troubleshooting 23 Generally Specifically 3 PL 533 Milltronics SmartLink 3 31 97 1 16 PM Page 3 ...

Страница 4: ...Milltronics device instruction manual for details on its location or physical installation SPECIFICATIONS Electrical compatible with any Milltronics SmartLinx compatible device and Allen Bradley Remote I O Physical compatible with any Milltronics SmartLinx compatible device Application compatible with Allen Bradley Remote I O Connection 3 position terminal block for wire end Termination switch sel...

Страница 5: ...f 150 Ω external off 82 Ω on RESERVED SWITCH setting all on CABLE CONNECTION Connect using Belden 9463 Blue Hose cable or equivalent and terminate blue clear according to Allen Bradley specification and conventions 5 PL 533 module connector underside to Milltronics device reserved switches status LEDs refer to Operation termination switch cable connector termination resistor as required clear shie...

Страница 6: ...n increases the delay of all block transfers on the Remote I O link A recommended guideline is to trigger the BTR and BTW instructions no faster than every 0 3 seconds SPECIFIC PARAMETERS P751 baud rate Sets the baud rate for Remote I O communication between Milltronics device and Allen Bradley values 0 57 6 kbaud 1 115 2 kbaud 2 230 4 kbaud The default value is 0 P752 rack number Enter the rack n...

Страница 7: ...on the Remote I O link Determine the position of Milltronics device and set this parameter accordingly value 0 not last 1 last The default value is 0 OPERATION Communication on the Remote I O link is indicated by the SmartLinx LEDs on module is powered off no communication between bus and module flash bus intact Allen Bradley PLC in program or Milltronics device set to different rack size than PLC...

Страница 8: ...sfer addresses and how to get the parameters you need Numeric values Numeric parameter values are by far the most common For example parameter P920 Reading returns a number representing the current reading either level or volume depending on the Milltronics device configuration Numeric values may be requested or set in either units or percent of span and may be specified with a number of decimal p...

Страница 9: ... by 256 It may simplify programming to notice xx most significant byte of value 128 yy least significant byte of value 128 Text messages If an Milltronics device parameter returns a text message that message is converted to a corresponding number shown in the table below 22222 invalid value 30000 off 30001 on 30002 30003 30004 err 30005 err1 30006 open 30007 shrt 30008 pass 30009 fail 30010 hold 3...

Страница 10: ...LARM 2 L_ALARM 3 H_ALARM 4 HH_ALARM 5 INSIDE_BAND 6 INSIDE_BAND_1 7 INSIDE_BAND_2 8 OUTSIDE_BAND 9 OUTSIDE_BAND_1 10 OUTSIDE_BAND_2 11 RATE_ALARM 12 RATE_ALARM_1 13 RATE_ALARM_2 14 TEMPERATURE_ALARM 15 LOE_ALARM 20 NON_SEQD 25 for pump control UNKNOWN_MODE 200 PL 533 10 Milltronics SmartLink 3 31 97 1 16 PM Page 10 ...

Страница 11: ...the Milltronics devices in two ways Multiple Parameter Access MPA and Single Parameter Access SPA word description 0 point on priority 1 parameter number MPA 2 parameter index MPA 3 decimal place MPA 4 format MPA 5 parameter number SPA 6 point number SPA 7 parameter index SPA 8 value SPA 9 decimal place SPA 10 format SPA 11 read write flag SPA 12 operating mode SPA Words 1 to 4 are MPA allowing co...

Страница 12: ...he returned value in BTR words 21 30 BTW Word 2 Parameter Index MPA Specifies the parameter index for the parameter returned in BTR words 21 30 This word is ignored for parameters which don t use indices Some specific Milltronics device parameters use indices to address the multiple values stored within the single parameter For example parameters P054 level breakpoints and P055 breakpoint volumes ...

Страница 13: ...e multiple values stored within the single parameter For example parameters P054 level breakpoints and P055 breakpoint volumes use the index to specify which breakpoint to read High level language programmers might think of this index as an array index BTW Word 8 Value SPA This word contains the value to be written to the parameter specified by BTW words 5 7 if BTW word 11 is set to 1 If BTW word ...

Страница 14: ...instructs the read write application of word 8 0 read parameter as described by words 5 6 7 9 and 10 word 8 ignored 1 set parameter to the value described by words 5 10 BTW Word 12 Operating Mode SPA This word sets the operating mode of the Milltronics device The device changes mode only when the status of the bit changes The operating mode can be equally set via the device keypad bit status 0 run...

Страница 15: ...4 parameter index MPA 35 parameter SPA 36 transducer SPA 37 index SPA 38 value SPA 39 decimal place SPA 40 format SPA 41 read write flag SPA BTR Word 0 bit description octal 00 11 point status indicate the operation of the points 1 10 bit 11 10 07 06 05 04 03 02 01 00 point 10 9 8 7 6 5 4 3 2 1 If a bit status is 1 the corresponding point is deemed to be operational based on the criteria defined b...

Страница 16: ...TR words 11 20 for the actual operational status of the measurement points BTR Words 11 20 Point Alarm and Status These words contain the corresponding alarm and status bits for point 1 10 respectively Bit status 0 false 1 true bit description octal 00 point not in operation 01 point failsafe timer expired 02 point failed cable shorted open or transceiver problem 03 point temperature sensor failed...

Страница 17: ...tween writing a request via a block transfer write and the appearance of the requested values 1 10 BTR words 21 30 BTR Words 35 37 and 39 41 Parameter Number Point Index and Decimal Place Format Flag SPA These words contain the last values written to BTW words 5 7 and 9 11 respectively They confirm that the parameter value has been written These words are not updated until the value has been succe...

Страница 18: ...mber of discrete input or words discrete output words 1 4 rack 2 0 1 1 2 rack 4 0 1 2 3 3 4 rack 6 0 1 2 3 4 5 full rack 8 0 1 2 3 4 5 6 7 In full rack configuration discrete output word 7 may be used to configure the returned data in discrete input word 7 This data is written in output word 7 bits 0 9 where each bit corresponds to a transducer 1 10 The meaning of those bits is determined by writi...

Страница 19: ...r example a 2 indicates the decimal should be shifted 2 places to the left or right as determined by bit 15 15 decimal shift Determines the direction of shift for the decimal bits 12 14 0 shift left 1 shift right If bits 12 14 are all 0 this bit may be ignored 16 numerical format Determines the numerical format for the data returned in discrete input words 1 6 0 normal 1 percent of span If a param...

Страница 20: ... Word 7 Point Status bits description octal 00 11 point i d Each bit confirms the association of the point s identified to the request for the point status bits 12 17 bit 11 10 07 06 05 04 03 02 01 00 point 10 9 8 7 6 5 4 3 2 1 e g bits 11 10 07 06 05 04 03 02 01 00 status 0 0 0 0 0 0 0 1 0 1 points 3 and 1 are identified 12 17 point status command Indicates the status of the points identified by ...

Страница 21: ...ed 00 1 4 rack 01 1 2 10 3 4 11 full This value may be useful for PLC programs to automatically know how much data is available 12 14 decimal Contains the value indicating the decimal place for all of the returned values 1 6 For example a value of 2 indicates the decimal should be shifted 2 places to the left or right as determined by bit 15 A zero indicates no shift 15 decimal shift Determines th...

Страница 22: ...se words contain parameter number and value from the Milltronics device as determined by the values written to the corresponding discrete output words 1 6 Returned values are between 10 000 and 10 000 inclusive otherwise refer to Troubleshooting Input Word 7 Point Status bits description octal 00 11 point i d Each bit confirms the association of the point s identified to the request for the point ...

Страница 23: ...witch on the SmartLinx module is set correctly Improper termination can interfere with proper remote I O operation Q2 I connected the Milltronics device to my remote I O link Communication with certain racks has stopped and I have rack fault bits set on those remote racks A2 1 Make sure the Milltronics device is connected and terminated correctly and in agreement with all Allen Bradley remote I O ...

Страница 24: ... on the PLC A4 2 Check the rack number P752 on the Milltronics device some Allen Bradley PLCs may accept only a limited number of racks Try setting the rack number to a lower available rack number A4 3 Try manually adding the Milltronics device to the PLC remote I O scan list If the problem persists contact Milltronics technical support Q5 The Milltronics device indicates it is being scanned but t...

Страница 25: ...witches 3 8 can override the Milltronics device rack number setting P752 Make sure all switches on the reserved DIP on the module are on Q9 No matter what baud rate the Milltronics device is set for P752 the Milltronics device always uses another constant baud rate A9 1 The SmartLinx module s reserved DIP switches 1 2 can override the Milltronics device baud rate setting P752 Make sure all switche...

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