Read Machine Data - Siemens S7-300 Operating Instructions Manual

Machine and cam data

9.3 Read machine data

9.3 Read machine data
Procedure
To read actual machine data from the module:
1. Set the following trigger bit in the channel DB:
2. Call FB CAM_CTRL in the cyclic user program.
Excerpt from the channel DB
Address
35.0
35.1
37.1
70
– Read machine data (MDRD_EN)
This saves the current machine data to the parameter DB on the CPU.
Name
MDWR_EN
MD_EN
MDRD_EN
Type Start value
BOOL FALSE
BOOL FALSE
BOOL FALSE
Operating Instructions, 05/2011, A5E01071724-03
Comment
1 = write machine data
1 = enable machine data
1 = read machine data
FM 352 electronic cam controller