Siemens S5-135U/155U appendix Marking of Modules

Digital Input/Output Modules

8.2.3Marking of Modules

For the marking of modules and front connectors, a set of labels is supplied with the modules for the labeling, and a set of labels with the addresses is supplied with the central controller. Figure 8-9 shows the locations of the labels. The self-adhesive address label is pre-printed. You can mark the strips to identify the signal line terminals.

1 2 4 1 5 3

Figure 8-9 Marking and Labeling of Modules

1Address label with the module address (output byte QB n or input byte IB n) under which the module is addressed by the STEP 5 program (address labels are supplied with the PLC), and for marking the addressing switch settings

2Labeling strip with the product designation which is color-coded to distinguish

between the various module types, as well as fields to mark the version and for user-related labeling of channels.

Color codes:
Digital inputs for DC voltage	blue
Digital inputs for AC voltage	red
Digital outputs for DC voltage	green
Digital outputs for AC voltage	orange

Update the version when replacing modules!

3Label with module address and marking of the required settings for the addressing switch

4Labeling strip for terminal designations or connection diagrams for the front connector

5Name plate

8-20	System Manual
	C79000-G8576-C199-06