Siemens SIMATIC S7-1500 Manual page 87

Technical specifications
Article number
Encoder signals, absolute encoder (SSI)
Input signal
•
Telegram length, parameterizable
•
Clock frequency, max.
•
Binary code
•
Gray code
•
Cable length, shielded, max.
•
Parity bit, parameterizable
•
Monoflop time
•
Multiturn
•
Singleturn
•
Interface types
TTL 5 V
•
RS 422
•
Isochronous mode
Isochronous operation (application synchronized up to
terminal)
Filtering and processing time (TCI), min.
Bus cycle time (TDP), min.
Interrupts/diagnostics/status information
Alarms
Diagnostic alarm
•
Hardware interrupt
•
Diagnostic messages
Monitoring the supply voltage
•
Wire-break
•
Short-circuit
•
A/B transition error at incremental encoder
•
Telegram error at SSI encoder
•
86
6ES7551-1AB00-0AB0
to RS-422
10 ... 40 bit
2 MHz; 125 kHz, 250 kHz, 500 kHz, 1 MHz, 1.5 MHz or
2 MHz
Yes
Yes
320 m; Cable length, RS-422 SSI absolute encoders, Sie-
mens type 6FX2001-5, 24 V supply: 125 kHz, 320 meters
shielded, max.; 250 kHz, 160 meters shielded, max.;
500 kHz, 60 meters shielded, max.; 1 MHz, 20 meters
shielded, max. 1.5 MHz, 10 meters shielded, max.; 2 MHz,
8 meters shielded, max.
Yes
16, 32, 48, 64 µs & automatic
Yes
Yes
Yes; push-pull encoders only
Yes
Yes
130 µs; only for pulse and incremental encoders
250 µs
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Technology module TM PosInput 2 (6ES7551-1AB00-0AB0)
Manual, 06/2018, A5E03982218-AB