Table 8: Termination details
Type of field
device
Type of Input/
Output
Termination diagrams
Network Stat with
Terminals (Fixed
Address = 199)
SA Bus
Setup and adjustments
Important:
Electrostatic discharge can
damage controller components. Use proper
electrostatic discharge precautions during
installation, setup, and servicing to avoid
damaging the controller.
Configuring N2 communications
N2-capable controllers support the full range of
possible N2 device addresses provided by the N2
protocol standard (1-254).
To configure a controller to communicate using the
N2 protocol, complete the following steps:
1. Disconnect the 24 VAC supply from the
controller.
2. Set the address switches to the desired N2
address. For details about setting a device
address, see
3. Reconnect the 24 VAC supply to the controller.
4. Using an SA bus connection, download the
firmware and controller application file
configured for N2 to the controller.
Switching the Communications Protocol
from N2 to MS/TP
For N2 sites that are converting to BACnet MS/TP,
you can switch the communications protocol of N2-
configured MS/TP controllers back to BACnet MS/TP.
To switch the CGM controller operating in N2
mode back into BACnet MS/TP mode, complete the
following steps:
1. Disconnect the 24 VAC supply from the
controller.
2. Set the address switches to the desired BACnet
MS/TP address. For details about setting a
.
3. Reconnect the 24 VAC supply to the controller.
4. Using an SA Bus connection, download a
controller application file configured for BACnet
MS/TP to the controller.
Configuring wireless
communications
To configure a controller for use with the ZFR/ZFR
Pro Series Wireless Field Bus system, complete the
following steps:
1. Disconnect the 24 VAC supply from the
controller.
2. Wire the input/output terminals and SA bus.
Note:
In wireless network applications, do not
connect any wires to the FC bus terminal block.
(Connect the FC/SA terminal block on an IOM
to an SA bus only.)
3.
Important:
Before the CGM controller is
powered on, connect the ZFR/ZFR Pro Wireless
Field Bus Router to the FC bus port (RJ-12
modular jack) on the front of the controller.
M4-CGM General Purpose Application Controllers Installation Guide
17
