Siemens S7-300 - Page 134

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S7-300 Automation System, Hardware and Installation: CPU 312IFM - 318-2 DP
9-22 A5E00203919-01
The table below lists the display of variables.
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configured CPU in their S7 program (Hardware Station) in which the VAT is
stored.
directly connected CPU that is connected directly to the PG.
available CPU. that is selected in the dialog window.
Menu item 3/&!&RQQHFWWR!$YDLODEOH&38 is
used to establish a connection to any CPU available on
the network.
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The function(QDEOH32 switches off output disable for the peripheral outputs
(PO), thus enabling control of the PO in CPU STOP mode.
In order to enable the POs, proceed as follows:
1. In menu item 7DEOH!2SHQWKHYDULDEOHWDEOH9$7, open the VAT that
contains the PO you want to control, or activate the window containing the
corresponding VAT.
2. To control the PO of the active VAT, select the CPU connection in menu
command 3/&!&RQQHFWWR.
3. Use menu command 3/&!2SHUDWLQJ0RGH to open the 2SHUDWLQJ0RGH
dialog and switch the CPU to STOP mode.
4. Enter your values in the "Control value" column for the PO you want to control.
Example:
PO: POB 7 control value: 2#0100 0011
POW 2 W#16#0027
POD 4 DW#16#0001
5. Use menu item 9DULDEOH!(QDEOH32 to switch to "Enable PO" mode.
6. Control the PO via menu item 9DULDEOH!(QDEOHFRQWUROYDOXHV. "Enable PO“
mode remains active until switched off again via 9DULDEOH!(QDEOH32.
"Enable PO" is also terminated when the connection to the PG goes down.
7. Return to step 4 if you want to specify new values.
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For example, a message pops up to indicate CPU mode transition from STOP
to RUN or START-UP.
A message also pops up indicating that the "Enable PO" function is selected
while the CPU is in RUN mode.