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WCS-PG410
Communication with WCS read heads
5.2
Option-E—Extended, Type WCS3B-LS2*E*, RS-485
The read head WCS3-Extended: WCS3B-LS*E* with RS-485 interface is used for routes of
more than 314.573 m. In this case, the additional "E" in the type code identifies the extended
version for the extending code rail. Two standard code rail segments with a length of
0 ... 314.573 m are connected to each other with the WCS3-CS70-E code rail extender to
achieve a maximum code rail length of up to 629.146 m. The first code rail segment must
always be complete, or end with the position at 314.573 m. The second code rail segment can
have a shorter length of 314.573 m to X m, but must be used in descending position, starting at
314.573 m.
Extended data protocol with position output
Request byte for read head
Byte
Response telegram from the read head
Byte
Byte 1 0
Byte 2 0
Byte 3 0
Byte 4 0
Byte 5 0
Data protocol with position and velocity output
Request byte for read head
Byte
Response telegram from the read head
Byte
Byte 1 0
Byte 2 0
Byte 3 0
Byte 4 0
Byte 5 0
Byte 6 0
Bit 8
Bit 7
Bit 6
1
0
1
Bit 8 Bit 7
Bit 6
A1
A0
0
0
XP15
XP14
XP07
XP06
xor
xor
B1.7..B4.
B1.6..B4.
7
6
Bit 8
Bit 7
Bit 6
1
1
1
Bit 8 Bit 7
Bit 6
A1
A0
0
0
XP15
XP14
XP07
XP06
SST
SP6
B1.7..B5.
B1.6..B5.
7
6
Bit 5
Bit 4
Bit 3
1
0
0
Bit 5
Bit 4
Bit 3
OVL
/VAL
DB
0
0
XP19
XP13
XP12
XP11
XP05
XP04
XP03
xor
xor
xor
B1.5..B4.
B1.4..B4.
B1.3..B4.
5
4
3
Bit 5
Bit 4
Bit 3
1
0
0
Bit 5
Bit 4
Bit 3
OVL
/VAL
DB
0
0
XP19
XP13
XP12
XP11
XP05
XP04
XP03
SP5
SP4
SP3
1.5..B5.5 B1.4..B5.
B1.3..B5.
4
3
Bit 2
Bit 1
Bit 0
1
A1
A0
Bit 2
Bit 1
Bit 0
OUT ALL
OUT
ERR
XP18
XP17
XP16
XP10
XP09
XP08
XP02
XP01
XP00
xor
xor
xor
B1.2..B4.
B1.1..B4.
B1.0..B4.
2
1
0
Bit 2
Bit 1
Bit 0
1
A1
A0
Bit 2
Bit 1
Bit 0
OUT ALL
OUT
ERR
XP18
XP17
XP16
XP10
XP09
XP08
XP02
XP01
XP00
SP2
SP1
SP0
B1.2..B5.
B1.1..B5.
B1.0..B5.
2
1
0
29
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