C01712 — SI Motion P1 (CU): Defect in F-IO processing

C01712 is a safety message from the SI Motion monitoring in the Control Unit (CU): while cross checking and comparing its two monitoring channels, the drive detected a difference between parameters or results of the F-IO processing and initiated STOP F. One of the monitoring functions no longer reliably functions - i.e. safe operation is no longer possible. Two accompanying messages follow: C01711 is displayed with message value 0 because STOP F was initiated, and if at least one monitoring function is active, C01701 “SI Motion: STOP B initiated” is output (in the manuals for S120/S150 and G130/G150 after the parameterized timer has expired). The message value of C01712 itself is read in r9749 (S120/S150 and G130/G150) or r2124 (G120), interpreted decimal, and names the cross-compared data that triggered the message.

• The two monitoring channels disagree: cross checking and comparing found a difference between parameters or results of the F-IO processing.
• The drive treats this as a failure of a monitoring function — it no longer functions reliably, so safe operation is no longer possible — and initiates STOP F.
• The affected data can be any of the cross-compared SI data of the two processors: F-DI terminal selections (STO, SS1, SS2, SOS, SLS, SDI, SLP), discrepancy, debounce and test-stop times, PROFIsafe F-DI transfer, F-DO signal sources and test sensor feedback, plus internal readback, initialization and retraction data — the message value names the data set concerned.

1. Read the message value in r9749 (S120/S150 and G130/G150) or r2124 (G120), interpret decimal, and use the decoding below to identify the cross-compared data that triggered the message.
2. Check the parameterization in the parameters involved and correct it if required.
3. Ensure equality by copying the SI data to the second channel — the G120 manual says: to processor 2 — and then carry out an acceptance test.
4. In the manuals for S120/S150 and G130/G150, check the monitoring clock cycle in p9500 and p9300 for equality.

The drive enters the number of the cross-compared data that resulted in this message into the message value; read it in r9749 (S120/S150 and G130/G150) or r2124 (G120) and interpret it decimal:

• 1: SI discrepancy monitoring time inputs (p10002, p10102).
• 2: SI acknowledgment internal event input terminal (p10006, p10106).
• 3: SI STO input terminal (p10022, p10122).
• 4: SI SS1 input terminal (p10023, p10123).
• 5: SI SS2 input terminal (p10024, p10124).
• 6: SI SOS input terminal (p10025, p10125).
• 7: SI SLS input terminal (p10026, p10126).
• 8: SI SLS_Limit(1) input terminal (p10027, p10127).
• 9: SI SLS_Limit(2) input terminal (p10028, p10128).
• 10: SI Safe State signal selection (p10039, p10139).
• 11: SI F-DI input mode (p10040, p10140).
• 12: SI F-DO 0 signal sources (p10042, p10142).
• 13: Different states for static inactive signal sources (p10006, p10022 ... p10031).
• 14: SI discrepancy monitoring time outputs (p10002, p10102).
• 15: SI acknowledgment internal event (p10006, p10106).
• 16: SI test sensor feedback signal test mode selected for test stop (p10046, p10146, p10047, p10147).
• 17: SI delay time for test stop at DOs (p10001).
• 18 ... 25: SI test sensor feedback signal (p10046, p10146, p10047, p10147) — expected state of the internal readback signal, generated from the selected test stop mode.
• 26 ... 33: SI test sensor feedback signal (p10046, p10146, p10047, p10147) — expected state of the external readback signal, generated from the selected test stop mode.
• 34 ... 41: SI test sensor feedback signal (p10046, p10146, p10047, p10147) — expected state of the second internal readback signal, generated from the selected test stop mode.
• 42: Internal data for processing the second internal readback signal, generated from the selected test stop mode (p10047, p10147).
• 43: Internal data for processing the internal readback signal, generated from the selected test stop mode (p10047, p10147).
• 44: Internal data for processing the external readback signal, generated from the selected test stop mode (p10047, p10147).
• 45: Internal data for initialization state of test stop mode, dependent upon test stop parameters.
• 46: SI digital inputs debounce time (p10017, p10117).
• 47: Selection F-DI for PROFIsafe (p10050, p10150).
• 48: Screen form of the F-DIs used (p10006, p10022 ... p10031).
• 49: SI SDI positive input terminal (p10030, p10130).
• 50: SI SDI negative input terminal (p10031, p10131).
• 51: SI SLP input terminal (p10032, p10132).
• 52: SI SLP select input terminal (p10033, p10133).
• 53: Internal data for retraction logic (p10009, p100109).
• 54: SI F-DI for retraction SLP (p10009, p100109).

Scope on G120: the instructions there decode only the values 1, 2, 3, 4, 7, 13, 14, 15, 46, 47, 48, 49 and 50 — value 48 is printed as Selection F-DI for PROFIsafe (p10050, p10150) and value 13 names the signal sources as (p10006, p10022 ... p10026). The G120 manual also expands: F-DI — Failsafe Digital Input, SLS — Safely-Limited Speed, SS1 — Safe Stop 1, STO — Safe Torque Off.

• r9749 — SI message value: on S120/S150 and G130/G150 this is where the message value of C01712 is read (interpret decimal) to identify the cross-compared data.
• r2124 — alarm value: on G120 the message value of this message is read here.
• p9500 — SI Motion monitoring clock cycle (Control Unit): check it for equality with p9300 as part of the remedy for this message (S120/S150 and G130/G150 manuals).
• p9300 — SI Motion monitoring clock cycle (Motor Module): the counterpart to p9500; both must be equal.

This safety message is accompanied by STOP F — while the discrepancy between the two monitoring channels exists, safe operation is no longer possible. For acknowledgment, the manuals for S120/S150 and G130/G150 describe a safe acknowledgment that works without a POWER ON: via the onboard F-DI (only CU310-2), via PROFIsafe, or from the machine control panel. The G120 manual notes that the message can be acknowledged via F-DI or PROFIsafe. The corrective work itself — parameterization checked and corrected, SI data copied to the second channel (on G120: to processor 2) with an acceptance test, and equal monitoring clock cycles in p9500 and p9300 — is listed under the checks above.