Siemens SIMATIC ET 200S Operating Instructions Manual page 246

1SSI
4.9 Control and Feedback Interfaces in Standard Mode
Bits Notes
STS_LOAD Feedback bit for CMP_VAL1 and CMP_VAL2. The 1SSI uses this bit to indicate that a comparison
value is loaded.
STS_UP Status direction down; for encoder value change from larger to smaller encoder positions (including
zero crossover)
RDY The parameter assignment of the 1SSI is correct, and the module is executing its functions. The
displayed feedback is valid. For the absolute value encoder error, ERR_SSI is also set.
Access to the Control and Feedback Interface in STEP 7 Programming
Feedback interface
Control interface
Load and transfer commands are also possible with CPU 3xxC, CPU 318-2 (as of V3.0), CPU 4xx (as of V3.0) and
1
WinLC RTX (PC CPU).
246
Configuring with STEP 7
using the GSD file )
1
(Hardware catalog\PROFIBUS-DP\
Additional FIELD DEVICES\ET 200S)
Read with SFC 14 "DPRD_DAT"
Write with SFC 15 "DPWR_DAT"
Configuring with STEP 7
using HW Config
(Hardware catalog\PROFIBUS-DP\
ET 200S)
Load command (e.g. L PID)
Transfer command (e.g. T PQD)
Technological Functions
Operating Instructions, 02/2007, A5E00124867-05