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Communication betwen CP341 and Telesis Marking Machine(TMC 420) via RS 485

Created by: SATYA SURAVIT at: 5/1/2015 8:18 AM (9 Replies)

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5/1/2015 8:18 AM	Rate (0)
SATYA SURAVIT Posts: 94 Rating: (0)	Hi Experts , I am using CP-341(6es7 341-1CH02-0AE0) for communication between S7 and Telesis Marking Machine(TMC 420) via RS 485 interface . Communication Parameters are assigned same for both side ( Baud rate-9600, data bit-8 , Parity –None , Stop bit- 2, protocol –ASCII in PLC side and EXTENDED in controller side , Interface – RS 485) Blocks Used in S7 -(P_SEND_RK , P_RCV_RK and SFC58 and SFC 59) . I am able to send the data from PLC and got the done bit from the block , but it is unable to deliver in controller side and same time i didn't get the receive NDR after sending . Kindly suggest me as priority basis .
SATYA SURAVIT Posts: 94 Rating: (0)
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5/4/2015 9:37 AM	Rate (0)
SATYA SURAVIT Posts: 94 Rating: (0)	Hello Experts , Kindly suggest me the possible solutions . Find the attached document for your reference . Attachment Telesis_Marking_MC.docx (593 Downloads)
SATYA SURAVIT Posts: 94 Rating: (0)
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5/4/2015 1:37 PM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello Satya, you should parameterize the CP with R(A) 0V and R(B) 5V and connect R(A) to R- (of the communication partner) and R(B) to R+. Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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5/4/2015 8:36 PM	Rate (0)
SATYA SURAVIT Posts: 94 Rating: (0)	Hi Kaulquappe, I have already configured in(RA -0 v and RB-5v ) in CP HW configuration . As per my document RA(pin 4) is connected to patner x-(pin 12) and RB(pin 11) is connected to partner x+(Pin 13) and GND (pin 7) in CP is connected to GND(Pin 8) in patner side . Kindly suggest me for the same Attachment Telesis_Marking_MC.docx (236 Downloads)
SATYA SURAVIT Posts: 94 Rating: (0)	Last edited by: SATYA SURAVIT at: 5/5/2015 7:26:19 AM Last edited by: SATYA SURAVIT at: 5/5/2015 8:12:13 AM
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5/5/2015 9:39 AM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello Satya, did you check the diagnostic buffer of the CP? Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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5/5/2015 10:32 AM	Rate (0)
SATYA SURAVIT Posts: 94 Rating: (0)	Hi , Kindly find the attached snaps of CP-341 parameterization and dignostic buffer Attachment CP-341.rar (311 Downloads)
SATYA SURAVIT Posts: 94 Rating: (0)
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5/5/2015 11:18 AM	Rate (0)
Kaulquappe Posts: 3093 Rating: (324)	Hello Satya, the CP reports transmission error. Possible reasons are: - wrong wiring - wrong parameterization - missing terminating resistors - missing Jumper at TMC - TMC not parameterized for RS485 mode Regards, Kaulquappe
Kaulquappe Posts: 3093 Rating: (324)
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5/5/2015 1:00 PM	Rate (0)
smiffy Platinum Expert Joined: 1/17/2007 Last visit: 3/10/2025 Posts: 1557 Rating: (540)	Have you tried the usual trick of swapping over the X-/X+ wires (obviously only at one end)? As not all systems use the same designation for their +/- connections.
	Programming today is the race between software engineers building bigger and better idiot proof programs, and the universe producing bigger and better idiots. So far, the universe is winning...
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5/6/2015 7:53 PM	Rate (0)
SATYA SURAVIT Posts: 94 Rating: (0)	Hi Smiffy , I checked to switch the x- and x+ in TMC side , but still no result . Can we check anything else in CP parameterisation ? Kindly suggest me as it's urgent .
SATYA SURAVIT Posts: 94 Rating: (0)
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7/10/2015 2:17 PM	Rate (0)
Min_Moderator Platinum Member Joined: 9/3/2014 Last visit: 3/13/2019 Posts: 4766 Rating: (122)	New question published by alaaproject is split to a separate thread with the subject Connect cp341-1ch02 and gimac-i. Best regards Min_Moderator

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