Byte 1: Status Bits And Distance To Go - Siemens SIMATIC S5 Manual

Addressing and Programming
Bit 6: Pulse disable - "IPD"
The "IPD" bit is set if input PD is active. The IP 267 resets the "IPD" bit
only when input PD is inactive and the module is reconfigured.
Bit 7: IP 267 not configured - "ILCN"
The "ILCN" bit is reset if valid configuration data is transferred to the
module during the configuration run. The bit is set by a job with zero
velocity and "STOP" mode.
4.3.3

Byte 1: Status Bits and Distance to Go

Bit 0 to 3: Distance to go DV 16 to DV 19
The distance to go indicates the number of (output) step pulses still to
be executed. This number is stored in a 20-bit address as a binary
value. P 16 to P 19 are the higher-order bits.
Bit 4 to 5: Unassigned
Bit 6: Job executing - "IJE"
The "IJE" bit "Job executing" is set as soon as a "Start forwards" or
"Start backwards" job is transferred to the IP 267 and executed. The
"IJE" bit is reset if the operating mode changes to neutral or STOP
and pulse output of the current job is complete (both conditions must
be met). You can use "IJE" as an acknowledgement bit if you execute
positioning jobs with extremely short paths: if the duration of pulse
output is shorter than the PC scan time, you cannot use the status
feedback message "IPQ" to check if a job has already been executed.
By contrast, "IPQ" remains set even after pulse output ( Figure 4-2.).
4-18
IP 267
EWA 4NEB 812 6061-02a