Input/Output Image - Siemens SINUMERIK 840Di sl Commissioning Manual

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7.6 HT 8
Alternate activation of two functions
An implementation option of alternate activation of two functions with each positive edge of
an input signal is shown by the following listing:
OB 1 (excerpt)
CLR
U E
FBD G
= G
UN G
SPB M007
CLR
U G
SPB M006
.....
I G
SPA M007
M006: ....
R G
M007: NOP 0
7.6.5.10

Input/output image

Input image
The address specification of the input image EB takes place in the FB 1 function module,
parameters: "MCPxIn", with x = 1 for the 1st MCP and x = 2 for the 2nd MCP.
Table 7-6 Assignment of the signals in the input image
Signals from HT 8
Byte Bit7
EB n+0
[REF]
EB n+1
CPF
(U key)
EB n+2 -
EB n+3 -
220
1.3 // (1) If positive edge of user softkey U2?
102.1
102.3
102.3
// (1) THEN
102.2 // (2) IF Flip-Flop == 0 ?
// (2) THEN
// Activate Function 1 (e.g. display)
102.2 // Flip-Flop = 1
// (2) ELSE (Flip-Flop == 1)
// Activate Function 2 (e.g. switch-off)
102.2 // Flip-Flop = 0
// (2) ENDIF
// (1) ENDIF
Bit6 Bit5
TEACH AUTO
{U4} {U3}
Changeove
r
Ax6+
axes
-
Bit4 Bit3
Function keys
[MDA] JOG
Function keys
BigFct {U2}
Traversing keys +
Ax5+ Ax4+
Traversing keys -
Commissioning Manual, 05/2008, 6FC5397–4CP10–4BA0
Bit2 Bit1
QUIT RESET
{U1} [INC]
Ax3+ Ax2+
Bit0
[WCS/
MCS]
[REPOS]
Ax1+
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