Addi-Data ADDICOM APCI-7300, Technical Description

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Connecting the peripheral APCI-7xxx
7 CONNECTING THE PERIPHERAL
7.1 Connector pin assignments: standard delivery
Fig. 7-1: 37-pin SUB-D male connector
Table 7-1: Pin assignment
RS485 RS422 Current Loop RS232
Pin Pin
RS232 Current Loop RS422 RS485
120
Ω
100
Ω DSR 20 1 CD +XMIT-CL-DATA TA
Tsource RTS 21 2 RxD -XMIT-CL-DATA TB Port 4
Rsource CTS 22 3 TxD +RCV-CL-DATA RA Tx/Rx+
Tx/Rx- RB -RCV-CL-DATA RI 23 4 DTR Rab (1)
TA +XMIT-CL-DATA CD 24 5 GND GND GND GND
TB -XMIT-CL-DATA RxD 25 6 DSR
100
Ω
120
Ω
Tx/Rx+ RA +RCV-CL-DATA TxD 26 7 RTS Tsource Port 3
Rab (1) DTR 27 8 CTS Rsource
GND GND GND GND 28 9 RI -RCV-CL-DATA RB Tx/Rx-
120
Ω
100
Ω
DSR 29 10 CD +XMIT-CL-DATA TA
Tsource RTS 30 11 RxD -XMIT-CL-DATA TB Port 2
Rsource CTS 31 12 TxD +RCV-CL-DATA RA Tx/Rx+
Tx/Rx- RB -RCV-CL-DATA RI 32 13 DTR Rab (1)
TA +XMIT-CL-DATA CD 33 14 GND GND GND GND
TB -XMIT-CL-DATA RxD 34 15 DSR
100
Ω
120
Ω
Tx/Rx+ RA +RCV-CL-DATA TxD 35 16 RTS Tsource Port 1
Rab (1) DTR 36 17 CTS Rsource
GND GND GND GND 37 18 RI -RCV-CL-DATA RB Tx/Rx-
19
TA: Tx422+ RA: Rx422+
TB: Tx422- RB: Rx422-
Rab: Connection to a terminal resistor
(1): Cable connection to 100
Ω
/120
Ω
terminates the RS422/RS485 lines
with the 100
Ω
/120
Ω
resitor.
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