PMC-2 Instruction Manual
Page 66 BA * PMC-2 * EN * 01/98
8.5 Variables
8.5.1 Access protection
There is a general mechanism for the control of the accesses to all variables. Each variable has an
access authorisation for writing; reading, however, has no access protection.
We differ between six authorisation levels:
Level Meaning Key Key deposit
0 Operator none none
1 Foreman Level1 Parameters
2 Installer Level2 Parameters
3 Application Level3 EPROM
4 R&D Level4 EPROM
5 none none none
8.5.2 Variable types
There are the following variable types:
Variable type Grammalogue Number
Inputs I 160
Outputs O 160
User variables V 10000
User flags F 160
Parameters P see parameters
Direct parameters Y see direct parameters
System variables S see system variables
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