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Change/delete Operand Value - Siemens SINUMERIK 840D Operator's Manual

Computerized numerical control system for machine tools.
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8
03.04

8.4.2 Change/delete operand value

PLC
Change
Operand +
Operand -
 Siemens AG, 2004. All rights reserved
SINUMERIK 840D/810D Operator's Guide HMI Embedded (BEM) – 03.04 Edition
Operand
Example
Reading
Counters
C20
Yes
Data
Yes
block
Data byte
DB3.DBB9
A maximum of 10 operands can be displayed simultaneously.
Changes can only be made to the PLC operands with the appropriate
password.
Danger
Changes in the states of PLC memory locations have a major impact
on the machine. Incorrect parameterization can endanger lives and
cause the destruction of the machine.
Function
The values of operands can be changed.
Operating sequence
The function can also be selected in the "Services" operating area.
Press softkey "PLC".
The first operand screen form appears.
The vertical softkey bar changes.
Cyclic updating of the values is interrupted.
You can increase or decrease the address of the operand by 1 place
at a time.
Diagnosis Operating Area
8.4 PLC
Writing
Format Value
Yes
B
H
D
Yes
H
Q
D
10
B
000 0000 0000 1010
C
8
Area
0-31
0-255
0-255
8-291

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