Connection Cables - 4-Port Serial Interface; Fig. 7-3: Connection Cable St074 (4 X 25-Pin); Fig. 7-4: Connection Cable St075 (4 X 9-Pin) - Addi-Data ADDICOM APCI-7300 Technical Description

Connecting the peripheral
Table 7-4: Pin assignment of the 9-pin connector:
TA: Tx422+
TB: Tx422-
IA: CTS+
IB: CTS-
7.3

Connection cables - 4-port serial interface

Fig. 7-3: Connection cable ST074 (4 x 25-pin)

* 1 Resistor integrated on the SI module
* 2 Cable connection to 100Ω/120Ω terminates the RS422/RS485 lines with
100Ω/120Ω resistor. (Wire bridges betweeen pin 20 and 6)

Fig. 7-4: Connection cable ST075 (4 x 9-pin)

* 1 Resistor integrated on the SI module
* 2 Cable connection to 100Ω/120Ω terminates the RS422/RS485 lines with
100Ω/120Ω resistor. (Wire bridges betweeen pin 20 and 6)
34
RS422 with handshake signals
RS422
Pin Pin
IA 6 1
CB 7 2
CA 8 3
RB 9 4
5
RA: Rx422+
RB: Rx422-
CA: RTS+
CB: RTS-
RS422
TA
TB
RA
IB
GND
APCI-7xxx