GE VersaMax IC200ERM002 - Page 37

2-10 VersaMax Modules, Power Supplies and CarriersUser Manual GFK-1504N
2
Connecting the Expansion Cable: RS-485 Differential
For a multiple-rack expansion system, connect the cable from the expansion
port on the Expansion Transmitter to the Expansion Receivers as displayed in
the following figure. If all the Expansion Receivers are the Isolated type
(IC200ERM001), the maximum overall cable length is 750 meters. If the
expansion bus includes any non-isolated Expansion Receivers (IC200ERM002),
the maximum overall cable length is 15 meters.
PS
CPU/NIU
PS
ERM
PS
ERM
ETM
VersaMax ExpansionRack 1
Terminator
Plug
15M with any
IC200ERM002 ERMs
750M with all
IC200ERM001 ERMs
VersaMax PLC or I/O Station Main Rack (0)
VersaMax ExpansionRack 7
IC200CBL601,
602, 615
Install the Terminator Plug (supplied with the Expansion Transmitter module)
into the lower port on the last Expansion Receiver. Spare Terminator Plugs can
be purchased separately as part number IC200ACC201 (Qty 2).
RS-485 Differential Inter-Rack Connection (IC200CBL601, 602, 615)
Expansion
Transmitter or
Expansion
Receiver
Module
Transmitting
Port
PIN
2
3
5
6
8
9
12
13
16
17
20
21
24
25
7
23
1
FR AM E+
FR AM E-
RIRQ/+
RIRQ/-
RUN+
RUN-
RERR+
RERR-
IODT +
IODT -
RSEL+
RSEL-
IOCL K+
IOCL K-
0V
0V
SHIELD
PIN
2
3
5
6
8
9
12
13
16
17
20
21
24
25
7
23
1
FR AM E+
FR AM E-
RIRQ/+
RIRQ/-
RUN+
RUN-
RERR+
RERR-
IODT +
IODT -
RSEL+
RSEL-
IOCL K+
IOCL K-
0V
0V
SHIELD
26-PIN
FEM AL E
26-PIN
MALE
26-PIN
MALE
26-PIN
FEM AL E
VARIABLE (SEE
TEXT)
Expansion
Receiver
Module
Receiving
Port
Building a Custom Expansion Cable
Custom expansion cables can be built using Connector Kit IC200ACC202,
Crimper AMP 90800-1, and Belden 8138, Manhattan/CDT M2483, Alpha
3498C, or equivalent AWG #28 (0.089mm
2
) cable.