D A Q E L E C T R O N I C S
Callisto IoG
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Looking at the communication ports on the front panel straight on, the communication
signals are arranged in each RJ-45 jack as shown below:
PIN SIGNAL
CORESPONDING
WIRE COLOR IN CABLE
1 ------------ Data Carrier Detect (DCD)-------------- Green-White
2 ------------ Receive Data (RXD)----------------------Green
3 ------------ Transmit Data (TXD)---------------------Blue-White
4 ------------ RS-485 (-) ----------------------------------Orange-White
5 ------------ Ground--------------------------------------Blue
6 ------------ RS-485 (+)----------------------------------Orange
7 ------------ Request To Send (RTS)-------------------Brown-White
8 ------------ Push To Talk (PTT)-----------------------Brown
2.6.2 Cabling
The IoG module is supplied with two 5-foot serial communications cables. These cables,
when plugged into the communications ports, will bring out all available signals. The
user now has access to RS-232 and RS-485 signals, and, depending upon what type of
cable, connector, or adapter is used, the appropriate signals can be tapped.
Note: It is possible to use either RS-232 or RS-485 communication, but not
simultaneously from the same port.
2.6.2.1 RS-485
For RS-485 communications between the IoG and an IED simply cut off the RJ-45
connector from one end of the supplied cable and connect the RS-485 (+) and RS-485 (-)
wires (Orange and Orange-White) to the IED.
