The example in the following figure shows a PLC-5 controller sending a message to port A on the 1756-DHRIO and 1756-DHRIOXT modules.
Because the controller slot for port A is configured to “0”, the message is forwarded to the ControlLogix controller in slot 0.
Receiving Local DH+ Messages on DH+ Because a local DH+ message
has only enough address information to get the message to a target node on the same DH+ network,
the 1756-DHRIO and 1756-DHRIOXT modules that receive this message cannot identify where to send the message.
The 1756-DHRIO and 1756-DHRIOXT modules use the Controller Slot configuration parameter to send the message to the local controller.
You must use RSLinx software to configure the controller slot.

ATTENTION:
Energized industrial control equipment can be hazardous.
Severe injury or death can result from electrical shock, burn, or unintended actuation of controlled equipment.
Hazardous voltages may exist in the cabinet even with the circuit breaker in the off position.
Recommended practice is to disconnect and lock out control equipment from power sources,
and discharge stored energy in capacitors, if present.
If it is necessary to work in the vicinity of energized equipment, the Safety Related Practices of NFPA 70E,
“ELECTRICAL SAFETY FOR EMPLOYEE WORKPLACES” must be followed.
DO NOT work alone on energized equipment!
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A-B 1756-IA32 module Rockwell ControlLogix 32-point output control |
A-B 1756-IA8D module Rockwell ControlLogix 8 output control |
A-B 1756-IB16 module Rockwell ControlLogix 16-point output control |
A-B 1756-IB16D module Rockwell ControlLogix 16 output control |
A-B 1756-IB16I Module Rockwell ControlLogix Output Module |
A-B 1756-IB16IF module Rockwell ControlLogix 16-point digital output control |
A-B 1756-IB16ISOE Module Rockwell ControlLogix 16 Points |
A-B 1756-IB32 Module Rockwell ControlLogix 32 Points |
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