Siemens SINUMERIK 828D Function Manual page 125

Example
In a system with two channels, the synchronized actions of the following identification
number areas should be protected:
Channel 1: 20 ... 30
Channel 2: 25 ... 35
Machine data configuration
NC-global protection area:
● MD11500 $MN_PREVENT_SYNACT_LOCK[0] = 25
● MD11500 $MN_PREVENT_SYNACT_LOCK[1] = 35
Channel-specific protection area for channel 1:
● MD21240 $MC_PREVENT_SYNACT_LOCK_CHAN[0] = 20
● MD21240 $MC_PREVENT_SYNACT_LOCK_CHAN1] = 30
Channel-specific protection area for channel 2:
● MD21241 $MC_PREVENT_SYNACT_LOCK_CHAN[0] = -1
● MD21241 $MC_PREVENT_SYNACT_LOCK_CHAN[1] = -1
A separate protection was not defined in channel 2 and therefore the NC-global protection
area applies.
Synchronized actions
Function Manual, 07/2012, 6FC5397-5BP40-3BA0
Detailed description
2.9 Protected synchronized actions
125