Siemens S5-135U/155U appendix Monitoring Module

Monitoring Module

10.1 Application

The monitoring module can be used in the expansion units of the programmable controllers S5-115U, S5-135U and S5-155U.

The module monitors the data bus, the address bus and the control signals MEMW/, MEMR/ and RDY/. Faults are displayed via four red LEDs on the front panel. A group signal is output at the same time via a floating contact. Following a fault, the module can be reset by means of the RESET key on the front panel or the RESET input (see Section 10.2.3).

10.1.1Design

The monitoring module is designed as a plug-in PCB in double Euroformat with a 32-pin backplane connector for the S5 bus.

A connector for the relay contact and RESET input as well as one green

LED, four red LEDs and a RESET key are located on the front panel.

RUN

BASP

R/W

ADB

DB

Operation (green LED)

Command output inhibit (red LED) Control signal fault (red LED) Address bus fault (red LED) Data bus fault (red LED)

RESET key

Relay contact

RESET input

8			7 6 5 4 3 2 1
OFF						S5
ON
		QVZ	PESP	1s	500ms 250ms 125ms
X4
	1
	6

8 7 6 5 4 3 2 1

OFF		S1
ON
OFF	8 7 6 5 4 3 2 1
ON		S2
OFF	8 7 6 5 4 3 2 1
		S3
ON
OFF	8 7 6 5 4 3 2 1
ON		S4

128 64 32 16 8 4 2 1

Bus

Figure 10-1 Location of the Coding Switches

10-2	System Manual
	C79000-G8576-C199-06