Siemens S5-135U/155U appendix Connecting Cable for Point-to-Point Communication

CPUs, Memory Cards, Memory Submodules, Interface Submodules

Connecting Cable for Point-to-Point Communication

If the CPU communicates as master in a point-to-point link with a slave, a connecting cable can be used instead of the bus terminal.

Shown in the following figure is connecting cable for point-to-point communication from the SINEC L1 submodule in the CPU to a partner.

Connecting cable: CPU - partner (point-to-point communication)

CPU 928B				e.g. CPU 928B, 941...945
				CPU 102, 103, AG 90U/95U
	9	+ RxD	± TxD	7
Receiver				Transmitter
	2	± RxD	+ TxD	6
	15	M	+ 20 mA	11
	11	+ 20 mA	M	+ 24V
+ 24V				15
	6	+ TxD	± RxD	2
Transmitter	7	± TxD	+ RxD	Receiver
				9
Housing, GND	1	Shield		1
				Housing, GND

Figure 5-30 SINEC L1 Submodule: Connecting Cable for Point-to-Point Communication via the SINEC L1 Submodule

System Manual	5-121
C79000-G8576-C199-06