Siemens SIMATIC S7-300 Manual page 35

3.1.1 Input values
SM 335 converts the signals measured at the inputs to binary values.
Installation
The input values are available at the module start address to module start address + 15
bytes. For information on how to calculate the module start address, refer to the SIMATIC
S7-300 Automation System, Module Data
(http://support.automation.siemens.com/WW/view/en/8859629) Manual.
The table below shows the assignment of inputs values.
Table 3- 1
Byte
ModAddr + 0
ModAddr + 1
ModAddr + 2
ModAddr + 3
ModAddr + 4
ModAddr + 5
ModAddr + 6
ModAddr + 7
ModAddr + 8
ModAddr + 9
ModAddr +
10
ModAddr +
11
ModAddr +
12
ModAddr +
13
ModAddr +
14
ModAddr +
15
*) Initial value
**) set to factory default
***) current value
SM 335 - High-speed analog mixed module for SIMATIC S7-300
Manual, 02/2009, A5E02409063-01
Input values of SM 335
Contents
High byte of the value measured at measuring channel CH 0
Low byte of the value measured at measuring channel CH 0
High byte of the value measured at measuring channel CH 1
Low byte of the value measured at measuring channel CH 1
High byte of the value measured at measuring channel CH 2
Low byte of the value measured at measuring channel CH 2
High byte of the value measured at measuring channel CH 3
Low byte of the value measured at measuring channel CH 3
In "Comparator" or "Measuring Only" mode:
- Number of end of cycle interrupts
Otherwise:
- Number of failed end of cycle interrupts +1; Default 1
Comparator mode (at startup) or return code for the
"Comparator" and "Measuring Only" modes
High byte of the voltage value of the encoder supply
(refer to chapter Adjusting the encoder supply (Page 31))
Low byte of the voltage value of the encoder supply
(refer to chapter Adjusting the encoder supply (Page 31))
Interval counter (refer to chapter Interval counter input
(Page 69))
Interval duration bits 16 to 24
Interval duration bits 8 to 15
Interval duration bits 0 to 7
Data exchange with SM 335
3.1 Access via I/O addresses
Value
7F *) or ***)
H
FF *) or ***)
H
7F *) or ***)
H
FF *) or ***)
H
7F *) or ***)
H
FF *) or ***)
H
7F *) or ***)
H
FF *) or ***)
H
00 *) or ***)
H
00 *) or 01 *) or
H H
***)
**)
**)
00 *) or ***)
H
FF *) or ***)
H
FF *) or ***)
H
FF *) or ***)
H
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