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SFBs for Integrated Control
Manual Mode in Two/Three-Step Control
In the manual mode (MAN_ON = TRUE), the binary outputs of the three-step or
two-step controller can be set using the signals POS_P_ON and NEG_P_ON
regardless of INV.
Control
POS_P_ON
NEG_P_ON
Three-step control
FALSE
TRUE
FALSE
Two-step control
QPOS_P
QNEG_P
FALSE
FALSE
FALSE
FALSE
TRUE
FALSE
TRUE
FALSE
TRUE
TRUE
TRUE
FALSE
FALSE
FALSE
Any
FALSE
TRUE
TRUE
Any
TRUE
FALSE
Initialization
SFB/FB "PULSGEN" has an initialization routine that is run through when the input
parameter COM_RST = TRUE is set.
All the signal outputs are set to 0.
Error Information
The error output parameter RET_VAL is not used.
System Software for S7-300/400 System and Standard Functions - Volume 2/2
A5E00739858-01
27-23