mtw12308
Member
Hi all.
I am working on converting a PV300 to a PV C400. System is using a Micrologix 1500LRP with several expansion IO modules. Communication is RS232 DH485 with two AIC+ modules. Cable connecting C400 to AIC+ is a 1761CBL.
Here's my issue. I have communication between controller and C400. I can read and write all I/O's that are native to the 1500LRP (I:0/1, O:0/3, etc). I can also read and write all bits, integers, etc. I can NOT read or write anything to or from the expansion modules (I:1/1, O:2/3, etc). I have my tags addressed as shown above. I can't seem to find any information on this other than this description from the manual which isn't really helping me.
"Communications - Data Access Error for Alias /*S:0 Param2*/, Controller/*S:0 Param3*/, Address is /*S:0 Param4*/, Communication Flag is /*:0 Param1*/
The terminal is having trouble reading the external tag at this controller and address.
Is the address configured in the controller? If so, make sure all addresses of external tags to this controller are configured at the controller. If one address is outside of the range, a block of addresses might show this condition. If the address is configured as write only at the controller, this address cannot be read. Set this external tag as write only and remove panel devices from your application that want to display this external tag."
I am working on converting a PV300 to a PV C400. System is using a Micrologix 1500LRP with several expansion IO modules. Communication is RS232 DH485 with two AIC+ modules. Cable connecting C400 to AIC+ is a 1761CBL.
Here's my issue. I have communication between controller and C400. I can read and write all I/O's that are native to the 1500LRP (I:0/1, O:0/3, etc). I can also read and write all bits, integers, etc. I can NOT read or write anything to or from the expansion modules (I:1/1, O:2/3, etc). I have my tags addressed as shown above. I can't seem to find any information on this other than this description from the manual which isn't really helping me.
"Communications - Data Access Error for Alias /*S:0 Param2*/, Controller/*S:0 Param3*/, Address is /*S:0 Param4*/, Communication Flag is /*:0 Param1*/
The terminal is having trouble reading the external tag at this controller and address.
Is the address configured in the controller? If so, make sure all addresses of external tags to this controller are configured at the controller. If one address is outside of the range, a block of addresses might show this condition. If the address is configured as write only at the controller, this address cannot be read. Set this external tag as write only and remove panel devices from your application that want to display this external tag."