Siemens SIMATIC S5 Manual page 264

IP 266
7.2.5 Bytes 4 to 7: Input Values for the Monitoring Functions
In each firmware cycle, the IP 266 returns a monitoring mode-dependent value. If
you entered a monitoring function in the output frame for the IP 266, the IP 266
returns a current value in bytes 4 to 7 at regular intervals. These values can be
read out in either KF or KH format.
Binary (KF format)
Integer positions Byte 4
Byte 5
Decimal positions Byte 6
Byte 7
Example:
The drive is positioned under closed-loop control in "JOG 2" mode (mode 2). Moni-
toring function mode 72 was also selected in the output frame.
The IP 266 returns the current following error in bytes 4 to 7,
e. g. + 5.310 mm
Position
Byte 4
specification
Binary in
KF format = sign and integer digits
BCD in
KH format =
EWA 4NEB 812 6057-02
Communication Between the CPU and the IP 266
BCD (KH format)
Byte 4
Byte 5
Byte 6 (bits 4 to 7)
Byte 6 (bits 0 to 3)
Byte 7
Byte 5
+5
0000
sign and 3 integer digits
Byte 6 Byte 7
310
= decimal digits
5310
= least-significant integer position
and 3 decimal digits
7-19