3.16
IDN14 Interface Status
The communication phase (CPx) and communication fault flags. In the event of a commu-
nication fault the amplifier stops and is disabled, and the amplifier’s communication phase
returns to 0. The communication interface fault summary bit (IDN11, bit 12) is set. The
cause of the communication fault is latched within IDN14 along with the communication
phase in which the fault occurred. The master may retrieve this information from the
amplifier by reading IDN14 before issuing a “Reset Class 1 Diagnostic” procedure
(IDN99).
If both bit 3 and bit 4 (MST and MDT failures) are set, this could indicate a signal loss
(e.g. a broken optical fiber cable). In this case, the MST and MDT error counters (IDN28
and IDN29) will not be incremented.
Bit
Description
2 - 0
Communication Phase (CPx).
3
MST failure.
4
MDT failure.
5
Invalid phase (CP > 4)
6
Error during phase advance.
7
Error during phase regression.
8
Phase switch without proper acknowledgment.
9
Switching to an uninitialized operation mode.
10 - 15
Data Length: 2 bytes
Non-Volatile:
No
Data Type:
Binary
Write Access:
Read-only
Minimum:
Run-Up Check:
Maximum:
Cyclic Transfer:
Default:
ASCII Param.:
28
sercos
®
for S300/S700
sercos
®
IDN Set
04/2016
Kollmorgen
