Diagnostics/Troubleshooting - Siemens SIMATIC Manual

Step Action
4 Switch the CPU to RUN.
5
Now carry out these two tests. Validate the control values via Variable > Enable control
values.
"Jogging" mode
Make the following settings:
MODE_IN = 1:
Selects "Jogging" mode
DRV_EN = 1:
Drive enable
SPEED:
Speed in pulses/s
Drive start:
DIR_P = 1: Jogging into Plus direction
DIR_M = 1: Jogging into Minus direction
Note: Positioning mode is impossible if you have
enabled the two variables DIR_P and DIR_M.
Operating mode "Relative incremental appro-
ach"
Make these settings:
MODE_IN = 4:
Select "Relative incremental approach"
DRV_EN = 1:
Drive enable
TARGET:
Distance in pulses
SPEED:
Speed in pulses/s
Drive start:
DIR_P = 1: Relative incremental approach into
Plus direction
DIR_M = 1: Relative incremental approach into
Minus direction

Diagnostics/Troubleshooting

Errors can occur as a result of operator faults, incorrect wiring or configuration con-
flicts.
How to diagnose such errors and messages is described in the Manual, Chapter
"Error handling and interrupts".
Sample :
The "ZEn26_03_TF_____31xC_Pos" project contains further samples you can use
for orientation. You can customize all samples according to your personal applica-
tions.
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Result
The "RUN" status of the CPU pops
up at the lower right.
In the "Status value" column, you
can monitor the following signal sta-
tes:
ST_ENBL = 1:
Start enabled
MOD_OUT = 1:
Current operating mode: "Jogging"
WORKING = 1:
Running
ACT_POS:
Actual position value
In the "Status value" column, you
can monitor the following signal sta-
tes:
ST_ENBL = 1:
Start enabled
MOD_OUT = 4:
Current operating mode: "Relative
incremental approach"
WORKING = 1:
Running
ACT_POS:
Actual position value
POS_RCD = 1:
In position
E Siemens AG 2001
Automation System S7-300, Getting Started – Analog
We reserve the right of modifications
A5E00105537 01
Printed in the Fed. Rep. of Germany
A5E00105537-01