Access Via I/O Addresses; Input Values; Output Values - Siemens SIMATIC S7-300 Manual

Data exchange with SM 335

3.1 Access via I/O addresses

3.1 Access via I/O addresses
You can use the I/O addresses to access the SM 335

Input values

Input values are values returned by SM 335. The input values contain measured values of
SM 335.
You can load the input values by means of I/O addressing command L PEB (or L PEW, or L
PED). Within the process image you can also gain read access by means of L EB (or L EW,
or L ED); refer to the table of the input value of SM 335 in chapter Input values (Page 35).

Output values

Output values are written to SM 335 in I/O addressing mode using the T PAB (or T PAW, or
T PAD) command. Within the process image you can also gain write access by means of T
EB (or T EW, or T ED)
You can use the output values to transfer analog values to SM 335. Those analog values are
output at the analog outputs of SM 335; refer to the table of the output value of SM 335 in
chapter Output values (Page 39) .
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SM 335 - High-speed analog mixed module for SIMATIC S7-300
Manual, 02/2009, A5E02409063-01