MVI56-MNETCR
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cjblake
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Monday 02 October 2006 8:29:16 am |
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MVI56-MNETCR
I am using the MNETCR card and have not been able to determine when I have lost communications to the slave device. The latest manual shows some ladder logic to do this but the manual shows data points that do not exist for the MNETCR, they are for one of the other MNET modules. Looking for a method to do this.
Chuck
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jsanders
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Monday 02 October 2006 11:16:55 am |
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RE:MVI56-MNETCR
If you look in the MVI56-MNETCR User Manual, starting on page 16, Section 2.3.2, you will see a discussion on how to use the special function blocks to read Client Status. This discussion goes along with the ladder logic shown in our sample in the Write Routine, Rung 7.
Part of the data returned in the special block will be the Client Command Error List. These 16 words will tell you the status of the last execution attempt for each command. If this status shows a value of zero, the command executed successfully. If this status shows any other value, that will indicate a communications problem to the slave.
This will be the only reliable way of determining communication health to any given Server (Slave) device.
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