WCS* Read Head Position Encoding System
Options and Special Functions
2020-01
65
9.2 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
Data protocol with position and velocity output
Request byte for read head
Byte Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
1 0 1 1 0 0 1 A1 A0
Response telegram from the read head
Byte Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Byte 1 0
A1 A0 OVL /VAL DB OUT ALL OUT ERR
Byte 2 0
0 0 0 0 XP19 XP18 XP17 XP16
Byte 3 0
XP15 XP14 XP13 XP12 XP11 XP10 XP09 XP08
Byte 4 0
XP07 XP06 XP05 XP04 XP03 XP02 XP01 XP00
Byte 5 0
xor
B1.7..B4
.7
xor
B1.6..B4
.6
xor
B1.5..B4
.5
xor
B1.4..B4
.4
xor
B1.3..B4
.3
xor
B1.2..B4
.2
xor
B1.1..B4
.1
xor
B1.0..B4
.0
Request byte for read head
Byte Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
1 1 1 1 0 0 1 A1 A0
Response telegram from the read head
Byte Bit 8 Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
Byte 1 0
A1 A0 OVL /VAL DB OUT ALL OUT ERR
Byte 2 0
0 0 0 0 XP19 XP18 XP17 XP16
Byte 3 0
XP15 XP14 XP13 XP12 XP11 XP10 XP09 XP08
Byte 4 0
XP07 XP06 XP05 XP04 XP03 XP02 XP01 XP00
Byte 5 0
SST SP6 SP5 SP4 SP3 SP2 SP1 SP0
Byte 6 0
B1.7..B5
.7
B1.6..B5
.6
1.5..B5.5 B1.4..B5
.4
B1.3..B5
.3
B1.2..B5
.2
B1.1..B5
.1
B1.0..B5
.0
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