Siemens S5-135U/155U appendix Setting the Module Address, Labeling Field

Digital Input/Output Modules

8.2Installation and Startup

This section describes how to prepare digital input/output modules for installation, and how to install and wire them.

8.2.1Setting the Module Address

	You set the module address on the addressing switch. This also establishes
	the necessary assignments between user program and process connection.
	The address of the digital input modules (input bytes IB 0 to 255 or 252 for
	the DI/DQ 482) and digital output modules (output bytes QB 0 to 255 or 252
	for the DI/DQ 482) is the sum of the binary significances established by
	depressing the individual rockers in the On setting (l).
	The modules are addressed by the STEP 5 program under their parameters
	(byte address).
Labeling Field	You can affix the adhesive label with the desired module address on a
	labeling field under the addressing switch. Suitable labels are supplied with
	the CC.
	The switch rockers with which the module address (IB n or QB n) is
	specified as a decimal number, are marked by dots on the label.
	Do not use a pencil to set the addressing switch.

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