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Limiter31

CJ1M-MAD42 constant output

7 posts in this topic

Hi, I am having this unusual problem where CJ1M-MAD42 output always seems to give a constant value of 51.8mA and 13.9V at channel 1, and channel 2. I usually go to program mode, and do a Transfer Unit to PLC to accept the changes on the parameter. But nothing seems to change on the output. I am trying to get it to output a range of 4-20mA, it wont accept any of the changes I made. I also have the a rung with P_On with set 2000.00 to enable the output. Am I missing something? Have anyone encountered this problem before? My first time here. Thank you, Edited by Limiter31

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It appears you have set you output signal range setting to 0-10V not 4-20ma.

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shoot, looks like I made the wrong screenshot. here it is. Thanks for noticing it. However, the problem still remains.

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It would help if you posted your PLC configuration and control logic for the MAD42. I suspect it is something in your module setup. The MAD42 modules are normally quite trouble free once you get the configuration right.

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Thank you for your interest. Here are my configurations, and the ladder too. It was really strange, that this module worked before using this configuration. I do not know how to troubleshoot this, something or someone must have messed it up.

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Try it without the first network (CI0 2000.00). It won't do anything as is anyway, and could be causing a problem with module initialization. What values do you see in CIO 2008, CIO 2001, D100 and D101 when the PLC is running??? edit: Another thought ... do an online "Compare with PLC" on you unit setup to be sure it got downloaded. Edited by Mendon Systems

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