Hello All,
I have a Micrologix 1200 on my test bench that is going in to a Major Fault due to I/O configuration not Matching. Odd thing is that I was able to Load this with just having 2 I/O cards in the configuration, but cards actually not present. PLC would Go in to run mode without Faulting. Now That I have added a 3rd card in to the configuration, Test bench PL (being only the CPU and No IO cards) goes in to a Fault.
Is there anyway to get the PLC to not Fault without actually having I/O attached?
Original Customer PLC
---------------------
ML1200 1672-L24BWA
SLOT1: 1762-IF4
SLOT2: 1762-IR4
Test Bench PLC
---------------------
ML1200 1672-L24BWA
SLOT1: None
SLOT2: None
Same program used on customer PLC Loads and runs on Test Bench PLC without a problem while having identical hardware configuration in the PLC program, but without actual
hardware connected at Slots 1 & 2.
Now when I add a 3rd card to the I/O configuration, Test Bench PLC goes in to a Fault as soon as I switch the program to run mode. (I have tried various types of Analog and Digital I/O cards in the I/O configuration and all of them fails when trying to run the program on the Bench PLC.
Why is it working with only 2 I/O cards in the configuration (but I/O not actually connected to the Test PLC), but fails when a third card is added to the I/O configuration?
Just to clarify, logic is sound i.e. Works correctly on Customer PLC with actual hardware attached at Slot #3.
Thank for any and all help and feedback.
I have a Micrologix 1200 on my test bench that is going in to a Major Fault due to I/O configuration not Matching. Odd thing is that I was able to Load this with just having 2 I/O cards in the configuration, but cards actually not present. PLC would Go in to run mode without Faulting. Now That I have added a 3rd card in to the configuration, Test bench PL (being only the CPU and No IO cards) goes in to a Fault.
Is there anyway to get the PLC to not Fault without actually having I/O attached?
Original Customer PLC
---------------------
ML1200 1672-L24BWA
SLOT1: 1762-IF4
SLOT2: 1762-IR4
Test Bench PLC
---------------------
ML1200 1672-L24BWA
SLOT1: None
SLOT2: None
Same program used on customer PLC Loads and runs on Test Bench PLC without a problem while having identical hardware configuration in the PLC program, but without actual
hardware connected at Slots 1 & 2.
Now when I add a 3rd card to the I/O configuration, Test Bench PLC goes in to a Fault as soon as I switch the program to run mode. (I have tried various types of Analog and Digital I/O cards in the I/O configuration and all of them fails when trying to run the program on the Bench PLC.
Why is it working with only 2 I/O cards in the configuration (but I/O not actually connected to the Test PLC), but fails when a third card is added to the I/O configuration?
Just to clarify, logic is sound i.e. Works correctly on Customer PLC with actual hardware attached at Slot #3.
Thank for any and all help and feedback.