Specifications

Modular I/O Configuration Guide42
Installation Considerations
Frames employ the CAN-bus for internal communication. Each module must have a unique System ID that consists of the Frame
ID + module CAN ID. The Frame ID is determined by the FC972’s IP Address/Subnet/Host Address. The FC972 must be assigned
a unique IP Address based on the frame’s role within the system. A CAN ID must be set for each externally controllable module.
Most modules have 32 CAN ID settings available but the AD914 Remote Mic Preamp has 16.
The FC972 has a default module CAN ID that does not interfere with those of other modules. The internal CAN bus must be ter-
minated once per frame, either on the FC972 or SY983.
A Modular I/O frame can employ two methods for remote control and configuration:
• CAN remote controllers: Set the frame address using the CAN Address switches, available on either the FC972 Remote or
the SY983. Set the CAN Address on one of these modules only. The other module must be set to a non-active default value
to avoid conflicts. This older method of setting an explicit CAN Address is used only when employing a hardware CAN-BUS
remote controller to configure frames.
• Web browser interface: In current systems, the frame address is determined by the IP Address assigned with the FC972 Re-
mote. The CAN Address switches on the FC972 Remote and the SY983 modules must be set to non-active default values to
avoid conflicts.
DEV0 – DEV2
These switches set the frame’s overall CAN Address for legacy systems utilizing a CAN remote controller. In systems utilizing the
web browser interface, DEV 0 – DEV 2 must all be set to ON (right position).
The SY983 has a preset CAN ID that cannot be changed so it will not interfere with other frame modules.
SY983 internal configuration
These switches appear on the FC972 Remote and must be set to non-active state on that module as well.
Insert the SY983 into one of the red reserved slots in the IO93 and IO94 Frames before applying AC power. For redundant sync
operation, place both SY983s in these slots and do not set any other module to Master mode. In a IO95 frame, place one SY983
in each active sync zone (any slot).