Installing An Hdlc Cable; Selecting An Hdlc Port; Connecting Serial Communication Cables; Serial Port Pin-Outs - GE D20 Installation And Operation Manual

D20/D200
Installation and Operations Guide
Connections and Configuration
Procedure: To connect the two CCUs using a D.20 HDLC connection:
Installing an
•
Connect one end of the HDLC Cable to the D.20 port you have selected for
HDLC Cable
redundancy communications on CCU A (see "Selecting an HDLC Port" below),
and the other end to the D.20 port on CCU B. See Assembly Drawing 977-
0089-AD for further details.
Selecting an If you use a D.20 HDLC connection for inter-CCU communications, configure both
HDLC Port CCUs, using Config Pro, to select either HDL0 or HDL1, as appropriate.
To connect CCU serial communication ports to the serial ports on the RS-232 Switch
Procedure:
Panel, use standard RS-232 cables, with DB9 female connectors at both ends. See
Connecting
"Redundant Multi-Node Systems" on page 86 for instructions on how to cable serial
Serial
communications in multi-node redundant systems.
Communi-
cation Cables
Serial Port Pin- Depending on the type of D20/D200 main processor board (D20ME or D20ME II),
Outs CCU serial ports can be configured as RS-232, RS-485 2-wire, or RS-485 4-wire.
The pin-outs for each of these options is as follows:
DB9 Connector
Note:
Redundant If you have a multi-node system, you may require multiple RS-232 Switch Panels,
Multi-Node depending on the number of serial connections your configuration supports.
Systems
In multi-node systems, one D20ME/ME II board is designated as the Master and
other D20ME/ME II boards are designated as Slaves. Normally, serial
communications are connected to one or more of the slave processor boards, in
which case, all seven of the slave's serial ports can be connected to the RS-232
Switch Panel and used for serial communications.
86
, continued
RS-232
1 DCD
2 RXD
3 TXD
4 +V
5 Common Ground
6 -12V
7 RTS
8 CTS
9 Chassis Ground
For RS-485 2-wire operation, RX- must be connected to TX-, and RX+ must be connected
to TX+.
994-0078-2.00-7
RS-485 4-wire
RS-485 2-wire
NC
RX- (see note)
TX- (see note)
+V
Common Ground Common Ground
-12V
TX+ (see note)
RX+ (see note)
Chassis Ground Chassis Ground
GE Energy
(RS-422)
NC
RX-
TX-
+V
-12V
TX+
RX+
General
Full