NUM 1060 W - Page 378

C - 20 en-938821/2
RS 422 Synchronous Serial Link on 1050 CPU
23
6
9
1
Solder side
5
1
1 - 9-contact male Sub.D connector on CPU side
2 - Shielded cable with 4 twisted pairs and 1 isolated conductor (0.22 mm
2
minimum cross sectional area,
characteristic impedance of a twisted pair approximately 120 ohms)
3 - Connector according to peripheral (metal or metal-plated cover)
CONNECTOR
BODY
PROTECTIVE
EARTH
6
9
4
7
3
PROTECTIVE
EARTH
1
CONNECTOR
BODY
5
R+
R-
0 V
T+
T-
TCLK+
TCLK-
1050 CNC PC
2
8
RCLK+
RCLK-
∗
T+
T-
0 V
R+
R-
RCLK+
RCLK-
TCLK+
TCLK-
∗ 120-ohm, 1/4 W resistor to be soldered in the connector.