Service Cases Of The Nc Program Alarms; G81 Deactivated In Iso Mode; M10/M11 Deactivated; Thread Cutting Interruption - Siemens SINUMERIK 808D Service Manual

5

Service cases of the NC program alarms

In this chapter, the following service cases are described:
Case 1 →
Case 2 →
Case 3 →
Case 4 →
5.1

G81 deactivated in ISO mode

Fault description
G81 is deactivated when the control system is switched to ISO mode.
Remedy
Replace "-ZSFR[0]" with "-ZSFR[10]". Because the tool change cycle uses "-ZSFR[0]" which conflicts with the ISO machine
data by default.
5.2

M10/M11 deactivated

Fault description
Case 1: Run the program in the MDA mode, M10 is deactivated so that the chuck cannot be clamped.
Case 2: Run the program in the AUTO mode, M11 is deactivated so that the chuck cannot be released.
Remedy
Case 1
In the PLC program an "interlock" exists, so the program running is prohibited when the chuck is released. You need to
modify the PLC subroutine. In most cases, with the chuck released, the spindle is not allowed to run in CW or CCW direction
when in the positioning or oscillating mode.
Case 2
A dwell of at least two seconds between M5 and M11 should be programmed.
Example:
；Spindle stop.
M5
；2 seconds dwell time.
G4F2
；Chuck is released.
M11
5.3

Thread cutting interruption

Fault description
The internal thread cutting is interrupted before the cycle is finished. In this case, no alarm appears and the spindle is still
running.
Remedy
Check the value format of the parameter "APP" (running path, without sign). A decimal point may have been used between
the two commas for parameter APP.
Service Manual
01/2017
G81 deactivated in ISO mode (Page 45)
M10/M11 deactivated (Page 45)
Thread cutting interruption (Page 45)
Wrong zero offsets in ISO mode (Page 46)
45