Siemens SIMATIC S5 Manual page 216

In the parameter "PC BCD coded"
whether all distances (double word parameter in the axis data block) and speeds (word and byte
parameters in the axis data block) supplied by the PC to the IP247 are to be interpreted as BCD
or binary. (=> Section 2.5.6 "Other Parameters"). Bits 28...31 represent the sign. In binary repre-
sentation, negative distances must be specified in two's complement.
Value:
high word
bit:
15
Value:
2
low word
bit:
15
Example:
incremental absolute (mode 6) to 120000 ~m and -120000 ~m.
(2) at 10000 mmdmin
12000010 = = >
=.> 0000000000000001 1101 010011000000 (binary)
-120000 10= = >
==> 1111 00000001 00100000000000000000 (BCD)
000000111110 1000 (binary)
00010000000000002
000000002
1000010 = > 271016
=>
0010011100010000 (binary)
(2)
=> 0001000000000000 (BCD)
000000012
A"1" in the byte parameter means that the IP247 multiplies the word parameter by 10.
in the machine data record of the axis, you can decide
27
2
Sign
. . . .28 27
12 11
FFFE2B4016
The Standard Function Block FB164
2 4
2 2 2 3 2
.. ....24 23 . .
8 7
2 2 2
7 . . . . 4
WORD PARAM13ER
WORD PAFWMHER
WORD PARAMETER
WORD PARAMETER
BYTE PARAMETER
16
2 0
2
. ,
4 3
2 2 °
3 .
6 - 2 3