Delta RMC151 - Manual (Page 476)

RMC70/150 and RMCTools User Manual
ControlLogix and represent external modules. In the Instance Name field of the GSV
blocks, type the name you selected for the particular RMC module.
If the connection to the module is running, then the high four bits of the EntryStatus will
be equal to 4 and the FaultCode will be equal to 0. This is described in the RSLogix 5000
online help's "Accessing the MODULE Object" topic.
The above ladder masks off the low 12 bits of the EntryStatus using an AND block, and
then sets the RMCConnFault coil to indicate whether or not the connection is faulted.
Omron CS1/CJ1/CJ2 PLCs
Refer to section 6-3-1 Ladder Programming Related to Tag Data Links in the
SYSMAC CS and CJ Series EtherNet/IP Units Operation Manual (document W-465-
E1-06) from Omron. This section describes using four flags to determine that the I/O
communications are operating normally with a specific target:
1. The Unit Error Occurred Flag (n+10, bit 00) must be OFF.
2. The Online Flag (n+11, bit 00) must be ON.
3. The Tag Data Link Operating Flag (n+11, bit 01) must be ON.
4. The Normal Target Node Flag (in words n+20 to n+23) for the corresponding target
node must be ON.
Notice that the Target Node PLC Operating Flag and Target Node PLC Error Flag also
discussed in this section are not used with RMC controllers.
Please refer to the above-referenced section of the Omron manual for additional
information including differences between Omron EtherNet/IP Unit revisions and example
ladder logic.
Schneider Electric Quantum, Premium, and Modicon M340 PLCs
Detecting a broken EtherNet/IP I/O connection on the Schneider Quantum and Premium
PLCs involves testing the appropriate connection health status bit in the EtherNet/IP
controller’s Derived Data Type (DDT) Variables.
The procedure for determining the location of the appropriate bit differs between the first
and second generation of communication modules from Schneider Electric:
Quantum 140 NOC 771 00 and Premium TSX ETC 100 Modules:
These status bits are located in the DDT input structure in a field called Status, which is
an array of 16 BYTEs. To determine the correct bit to check for a given target device, you
must locate the Connection Bit Health Offset field for the device:
1. Open the Unity Pro EtherNet/IP Configuration Tool.
2. Open the properties for the desired target device.
3. Select the Connection tab.
4. Under Configured Connections, select the General item for the connection whose
status you want to monitor. In most cases, there will only be a single connection in
this list.
5. Under Connections Parameters, locate the item named Connection Bit Health
Offset. This is usually the first item in the list. This should be a value in the range of
0..127.
The value of the Connection Bit Health Offset is the bit offset from the start of the 16-
byte Status[] array located in the Derived Variables for the EtherNet/IP controller (140
NOC 711 00 or TSX ETC 100). Offsets 0-7 correspond to Status[0].0 to Status[0].7,
offsets 8-15 correspond to Status[1].0 to Status[1].7, and so on. If this bit is 1, then the
connection is healthy. If this bit is 0, then the connection has been lost.
Quantum 140 NOC 771 01, Premium TSX ETC 101, and Modicon M340 BMX NOC
0401 Modules:
456 Delta Computer Systems, Inc.