GE MDS ORBIT ECR - COM1;2 Port Pin Details (RS-232)

MDS 05-6632A01, Rev. F MDS Orbit MCR/ECR Technical Manual 25
8O1 - 8 char bits, odd parity, 1 stop bit
8O2 - 8 char bits, odd parity, 2 stop bits
8E1 - 8 char bits, even parity, 1 stop bit
8E2 - 8 char bits, even parity, 2 stop bits
7N1 - 7 char bits, no parity, 1 stop bit
7N2 - 7 char bits, no parity, 2 stop bits
7O1 - 7 char bits, odd parity, 1 stop bit
7O2 - 7 char bits, odd parity, 2 stop bits
7E1 - 7 char bits, even parity, 1 stop bit
7E2 - 7 char bits, even parity, 2 stop bits.
The tables on the following page provide pin descriptions for the COM1 data port in RS-232 mode and
RS-485 modes, respectively.
NOTE The COM2 port, if present, is restricted to RS-232 mode; it cannot be used for RS-485.
(As viewed from the outside the unit)
Table 2-2. COM1/2 Port Pin Details (RS-232)
Pin
Number
Input / Output
Pin Description
1
Reserved
COM1 only: ALARM Output (refer to “Alarms” on Page 150 )
2
OUT
DCD (Data Carrier Detect)
3
Reserved
--
4
Ground
Connects to ground (negative supply potential) on chassis
5
OUT
RXD (Received Data)—Supplies received data to the connected device
6
IN
TXD (Transmitted Data)—Accepts TX data from the connected device
7
OUT
CTS (Clear to Send)
8
IN
RTS (Request to Send)