Siemens simatic et 200s Operating Instructions Manual page 378

1PosUniversal/Digital
7.10 Technical specifications
Technical specifications 1PosU
Encoder connection SSI
Position detection
Differential signals for SSI data and SSI clock
Data transmission rate and line length with
absolute encoders (twisted pair and shielded)
Age of the encoder value
•
•
Frame runtime
•
•
•
•
•
Monoflop time
Status, Diagnostics
Change in actual value (up)
Change in actual value (down)
Status display positioning in operation
Status display DI0 (minus hardware limit switch)
Status display DI1 (plus hardware limit switch)
Status display DI2 (reducing cam)
Group error on the 1PosU
Diagnostic information
Response Times
Update rate for feedback messages
Response time at the switchover or switch-off point
Latch response time
Encoders with a monoflop time greater than 64 µs, cannot be used with the 1PosU.
1
378
Max. (2 * frame runtime) + 64 µs
Min. frame runtime
125 kHz
250 kHz
500 kHz
1 MHz
2 MHz
1
Absolute
According to RS422
125 kHz max. 320 m
•
250 kHz max. 160 m
•
500 kHz max. 60 m
•
1 MHz max. 20 m
•
2 MHz max. 8 m
•
13 Bit
112 µs
56 µs
28 µs
14 µs
7 µs
64 µs
UP LED (green)
DN LED (green)
LED POS (green)
LED 1 (green)
LED 5 (green)
LED 2 (green)
SF LED (red)
Yes
2 ms
At incremental encoder:
Output delay + 30 µs
For SSI encoder:
Output delay + Frame runtime + 30 µs
For incremental encoder:
Typ. 400 µs
For SSI encoder:
Typ. 400 µs + age of encoder value
Operating Instructions, 05/2007, A5E00124871-04
25 Bit
208 µs
104 µs
52 µs
26 µs
13 µs
ET 200S Positioning