Specifications

Operations Manual, Redundant System Controllers 209351 REV B 15
2.4.3 Serial Port, Local (J5) - DB9 (M)
The local serial port is used to support special transceiver systems and remote control
panels. The baud rate of this port is fixed at 9600 Baud and cannot be changed. J5 is
permanently configured for RS-485 half duplex communication. Table 2-3 details the
local serial port pin-out.
2.4.4 Program Port (J6) - DB25 (M)
The program port allows for flash firmware upgrades of the RCP controller. Using the
Teledyne Paradise Datacom Flash Upgrade software and a connection between the
PC’s printer port and J6 allows the RCP firmware to be easily upgradeable. The
procedures for performing firmware upgrades is covered in Section 6, Maintenance.
2.4.5 Parallel I/O Connector (J7) - DB37 (F)
The RCP controller has a full compliment of parallel monitor and control lines. A 37-pin
D sub-style connector is used for the parallel I/O signals, which are detailed in Table
2-4. Ten Form-C relays are used for converter, switch position, and mode control.
Each Form-C contact has a rating of 30 VDC @ 0.5 A, 110 VDC @ 0.3 A, and 125
VAC @ 0.5 A. The inputs and ground pins are isolated from the rest of the unit’s cir-
cuitry. Inputs are activated by pulling it down to the isolated ground pin. In order to fully
utilize the built-in inputs protection, it is recommended to keep the input’s ground iso-
lated from the chassis ground.
Table 2-3: Local Serial Port (J5) Pin Out
Function Pin Notes
RS-485 RX+ 1
RS-485 RX- 2
RS-485 TX- 3
RS-485 TX+ 4
Ground 5
Termination (120 Ohm) 9 Connect to pin 1 to terminate unit on end of bus