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9-1
Manual OP5, OP15
( ) J31069-D0840-U001-A2-7618
STATUS VAR and FORCE VAR Functions
with the OPs (S7/S5 Only)
With their PU functions STATUS VAR and FORCE VAR, the OPs provide
means of displaying and modifying operand values supplied by a connected
SIMATIC S5/S7 by means of standard screens. In online mode, this means
that PLC operands can be edited directly on the OP without having to con-
nect a programming unit to the PLC.
STATUS VAR can be used only to display operands.
FORCE VAR is used to display the operands and modify their variable val-
ues, and to transfer them back to the PLC. The specified operands remain in
the static RAM and are still valid after a warm start of the OP.
Before calling the STATUS VAR and FORCE VAR functions, you must set
the MPI address or PPI address of the connected SIMATIC S7. If only one
PLC is connected, its address is address 2.
You call FORCE VAR by means of the standard screen ForceVAR. Following
the call, the operand list is displayed. Depending on the line length of the
display, an operand is displayed on either one or two lines.
Figure 9-1 shows the display for the SIMATIC S5 on the OP15/A (2x40).
Figure 9-2 shows the display for the SIMATIC S7 on the same device.
DB34 DW122 KM = 00010010 00110100
Value field
Format field
Numbers field
Operand field
T 1 KT = 3.4 s
*
Updating in progress
Figure 9-1 Display of PLC Operands for the SIMATIC S5 (Example: OP15/A, 2x40)
Accessing
operand values of
the PLC
Note for
SIMATIC S7
FORCE VAR
9
Summary of Contents for OP15
Page 6: ...iv Manual OP5 OP15 J31069 D0840 U001 A2 7618 Preface ...
Page 11: ...Product Description 1 Functionality 2 Part I Introduction ...
Page 12: ... 2 Manual OP5 OP15 J31069 D0840 U001 A2 7618 ...
Page 24: ...2 4 Manual OP5 OP15 J31069 D0840 U001 A2 7618 Functionality ...
Page 26: ... 2 Manual OP5 OP15 J31069 D0840 U001 A2 7618 ...
Page 42: ...4 10 Manual OP5 OP15 J31069 D0840 U001 A2 7618 General Operation ...
Page 66: ...7 16 Manual OP5 OP15 J31069 D0840 U001 A2 7618 Message Handling ...
Page 78: ...8 12 Manual OP5 OP15 J31069 D0840 U001 A2 7618 Recipes ...
Page 88: ... 2 Manual OP5 OP15 J31069 D0840 U001 A2 7618 ...
Page 98: ... 2 Manual OP5 OP15 J31069 D0840 U001 A2 7618 ...
Page 122: ...17 8 Manual OP5 OP15 J31069 D0840 U001 A2 7618 Device Description ...
Page 128: ...19 4 Manual OP5 OP15 J31069 D0840 U001 A2 7618 Test and Monitoring Functions ...
Page 132: ... 2 Manual OP5 OP15 J31069 D0840 U001 A2 7618 ...
Page 146: ...B 12 Manual OP5 OP15 J31069 D0840 U001 A2 7618 System Messages ...
Page 150: ...C 4 Manual OP5 OP15 J31069 D0840 U001 A2 7618 Technical Data ...
Page 156: ...E 4 Manual OP5 OP15 J31069 D0840 U001 A2 7618 ESD Guidelines ...
Page 165: ...F 9 Manual OP5 OP15 J31069 D0840 U001 A2 7618 Siemens Worldwide ...
Page 177: ...Index 8 Manual OP5 OP15 J31069 D0840 U001 A2 7618 Index ...