Pin Assignments For Cp 523 To Cp 523 (Tty Interface) - Siemens SIMATIC S5 CP 523 Manual

Hardware Installation
3.4.2 Terminal Diagrams Communications Mode
The CP 523 assumes the following as peripheral device:
• Data terminal equipment, e.g. CP 521, CP 523, CPU 944
• Data communications equipment, e.g. a MODEM
CP 523 to CP 523 (TTY interface)
CP 523 (TTY passive)
Figure 3-9. Pin Assignments for CP 523 to CP 523 (TTY Interface)
CP 521 (TTY passive) - CP 523 (TTY active)
CP 521
Figure 3-10. Pin Assignments for CP 523 (TTY Passive) to CP 523 (TTY Active)
3-10
TTY IN+ (6)
TTY IN - (8)
TTY OUT+ (10)
TTY OUT - (12)
Shield (24)
Shield (25)
TTY IN+ (6)
TTY IN - (8)
TTY OUT+ (10)
TTY OUT - (12)
Shield (24)
Shield (25)
CP 523 (TTY active)
(22) 20 mA
(10) TTY OUT+
(12) TTY OUT -
(2)
Ground
(20) 20 mA
(6) TTY IN+
(8) TTY IN -
(2)
(24) Shield
(25) Shield
(22) 20 mA
(10) TTY OUT+
(12) TTY OUT -
(2)
(20) 20 mA
(6) TTY IN+
(8) TTY IN -
(2)
(24) Shield
(25) Shield
EWA 4NEB 811 6044-02a
CP 523
+
+
Ground
CP 523
+
Ground
+
Ground