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Okay now the problem solved. It is because of the MVI46-MCM firmware. Just need to refresh the firmware

I have tried reducing the code to single module. I also did try using the sample ladder without any modification but still got the same. I have also try to create a new project and configured the I/O configuration only by adding the MVI46-MCM module in Slot 1 without any code in the project. But it still turn to Fault when switching to RUN mode. Is there something wrong with the configuration in Advanced I/O configuration because when I did "read IO config" at I/O Configuration to read the actual I/O, I got a different setting in Advanced I/O configuration of the MVI46-MCM which is not equal to the default MVI46-MCM setting as per manual and once I changed the M0 and M1 Length to 1024, the controller not turn to Fault when switching to RUN mode. Is there anything wrong also with the ID Code in the I/O configuration because when I did "read IO config" I got a different number from the default ID Code? Attached is the snap shot for the Advance I/O Configuration setting after I did the "read IO config". Thanks in advance PICTURE_1.bmp

Hello all, I have a problem to go RUN mode for my PLC. I am using 1747-L532E controller. It has turned to major fault (error code = 15Ch) when I want to switch to RUN mode. In the I/O configuration, consist of: Slot 0 = 1747-L532E Slot 1 = OTHER (MVI46-MCM) Slot 2 = OTHER (MVI46-MCM) I am using the sample ladder with some edited to suit with the I/O configuration. Anyone experienced this before?

Hello, Anyone know about this Decanter model Hysep MD44? I am going to do the upgrade for the Decanter PLC system from Mitsubishi Melsec A to AB Micrologix 1400. The client did not provide enough information, they just gave me the I/O list and the Mitsubishi PLC program without any comment. It is hard for me to understand the process and the system operation. So far, what I can do is only doing direct conversion of the Melsec program to Allen Bradley. Another problem is the HMI. I don't have any idea on how to link the PLC program tag to the HMI. I am using AB PanelView C600. Anyone experience with this Decanter model? Appreciated if you guys can get me any idea.. Thanks

Hi all, Anyone here experienced using MVI56-MCM to poll "SEL-751A Feeder Protection Relay" Modbus Memory Map data? I need to know how to read attached coil address since I cannot find the data in user manual. Much appreciate if you guys can give me any idea to start somewhere. Thanks in advance Modbus Address Registers used.doc

I want to configure a reading with range -20degC to 100degC. The transmitter is giving out current value. There are 2 wires coming out from the transmitter. How does the PLC can know whether the signal is voltage or current? Is it automatically detect from the terminal wiring?

Hi all, I'm a newbie in this forum and also newbie in this PLC world. Got a question to ask you guys. How to know the embedded Analog Input for PLC 1769-L23E QBFC1 to accept whether Engineering Unit, Scaled PID or Raw value? I have go through with the manual but can't find any info to configure this. Thanks in advance