Siemens 505-2557 Internal Register Structures, Input and Output Register Offsets, Input Registers

3.2Internal Register Structures

Description of the The SIMATIC 505±2557 module in the high-density mode logs in to the

I/O Registers controller as 32 WX input registers, 32 WY output registers and 16 X and 16 Y discrete inputs and outputs. This high-density configuration provides support for reading the raw data and the processed data, and for writing the configuration data to the module. Refer to section 3.7 for a one-page summary of I/O assignments.

Starting login addresses and the locations of their corresponding registers are shown in Table 3-1.

Table 3-1 Input and Output Register Offsets

Starting Controller Address	1	105
X registers begin	1	105
Y registers offset 16	17	121
WX registers offset 32	33	137
WY registers offset 64	65	169

Input Registers	The word input content of the module consists of 32 WX input registers.
	These registers present the raw measured data and the processed data to
	the controller.
	WX33 ± WX48 contain the converted data in engineering units for the
	sixteen input channels, as shown in Table 3-2.
	Table 3-2 Input Channel Data

WX33

.

.

WX48

Channel 1

.

.

Channel 16

Conversion data

.

.

Conversion data

SIMATIC 505±2557 Installation and Operation Guide Advanced Function Programming 3-5