Comrex ACCESS MultiRack, Product Manual

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Instance #2 Instance #3 Instance #4 Instance #5
CC in #1 IDI0 IDI4 IDI8 IDI12
CC in #2 IDI1 IDI5 IDI9 IDI13
CC in #3 IDI2 IDI6 IDI10 IDI14
CC in #4 IDI3 IDI7 ISI11 IDI15
CC out #1 IDO1 IDO5 IDO9 IDO13
CC out #2 IDO2 IDO6 IDO10 IDO14
CC out #3 ID03 IDO7 IDO11 IDO15
CC out #4 ID04 IDO8 IDO12 IDO16
Inputs are triggered by shorting the respective input to any pin labelled GND. Outputs consist of an open collector
circuit which, when inactive, will offer a high-impedance path to GND and, when active, will offer a low impedance
path to GND. These outputs are capable of sinking up to 200 mA at a voltage up to 40 V. Total sink current for all
outputs is rated at 1.1 A. Do not switch AC mains power using these contacts.
pInouts - serIAl port (InstAnce #1 only)
The Serial Port is capable of transferring ancillary data to the far end of the connection. By default, the
communication parameters are set for 9600 bps, no handshaking, no parity, 8 data bits, one stop bit (9600,n,8,1). It
is pinned on a RS-232, 9-pin D female in DCE-style pinning. The port is designed to connect to a 9-pin PC serial port
with a straight-through M-F cable.
Serial Port Pinouts
Pin # Function Direction
1 CD Unused
2 RX Data From MultiRack
3 TX Data To MultiRack
4 DTR To MultiRack
5 Ground
6 DSR From MultiRack
7 RTS To MultiRack
8 CTS From MultiRack
9 RI Unused
pInouts - serIAl port (InstAnces #2-5)
Serial ports for these instances are available by attaching a USB-Multi Channel Serial adapter to one of the available
USB ports on the rear panel (A USB hub may be required if ports are full). The supported device is the Coolgear
USBG-4X232P1. The additional serial ports are assigned: