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Old March 5th, 2018, 04:35 AM   #1

scornush is offline
Join Date: Mar 2018
Location: saudi
Posts: 2

dear sir's,
i have OMRON CJ1M CPU with SCU41-V1 CARD for RS-422/485 communication with omron inverter of model V7 via PMCR(260) Instruction. now i want to replace the V7 inverter with V1000. i have made all the port settings and parameter settings for V1000. but i am not much familiar with cx-protocall. i wnat to edit the send and receive sequence for V1000. i have the sequece as mentioned below for V7 inverter. please can some one help me on this regard.
send message for v7 inverter was written as mentioned below.
send msg:
SD(0)_1 <a>+[100118000102]+(R(2),2)+<c>
SD(1)_1 <a>+[0300230001]+<C>

RV(17)_1 <A>[0302]+(W((1),2)+<C>

i could not understand the data [100118000102] which was not clearly mentioned in any of the manual.

thanks and best regards,
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Old March 6th, 2018, 06:57 AM   #2

gclshortt is offline
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Join Date: Dec 2014
Location: Cobourg
Posts: 2,682

The above manual is for the V7 inverter. It looks like this may be modbus communication.
You can tell by the set up of the SCU41 card.

The inverter manual is the reference you need to determine the information being sent to the device.
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Old March 6th, 2018, 08:22 AM   #3

scornush is offline
Join Date: Mar 2018
Location: saudi
Posts: 2

dear sir,
thank you so much for your prompt assistance. here we are using modbus communication. in the PLC program we are using {PMCR(260) instruction with control word 1 as #110(position 0 is used for scu41-v1 card), with control word 2 as (&212, &239, &240) sequence no (1, 14, 15) in the attached photo (1.modbus sequence),& first send word with data of frequency reference1,2,3,4 & acceleration deceleration 1,2,3,4}. the above said program was done for V7 inverter in that i have replaced part of V7 inverter with V1000 which falls under sequence 1(&212). i would like modify this sequence to communicate with v1000 inverter which involves send and receive of 2 bytes of frequency reference. i have attached the photos of cx-protocall which was programmed for V7 inverter. i want to add new sequence, send&receive msg for V1000 inverter. so please help me how to write for the v1000 inverter. the data to be transfered for v1000 is same as of v7. but i confused with register addressing. so please help me to modify as required. thanks in advance
Attached Images
File Type: jpg 1.MODBUS SEQUENCE LIST.jpg (65.5 KB, 4 views)
File Type: jpg 2.SEQUENCE 1.jpg (54.4 KB, 4 views)
File Type: jpg 3.SEND MSG LIST.jpg (58.4 KB, 3 views)
File Type: jpg 4.RECEIVE MSG LIST.jpg (66.9 KB, 2 views)
File Type: jpg 5.MATRIX LIST.jpg (57.6 KB, 1 views)
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