3.6 Linear Scale Connections
3-29
3
Wiring and Connection
3.6
Linear Scale Connections
This section describes the connection example of output signals between linear scale, SERVOPACK and host
controller.
CN2 linear scale connector terminal layout is also described.
3.6.1
Linear Scale Signal (CN2) Names and Functions
The following table shows the names and functions of the linear scale signals (CN2).
∗
Do not use the pins 3 and 4. They are connected to internal circuit.
3.6.2
Connection Example of a Linear Scale
The following diagrams show examples of connecting linear scale.
(1) Linear Scale Made by Heidenhain
∗
: represents twisted-pair wires.
Signal
Pin No.
Function
PG 5 V
1
Linear scale power 5 V
PG 0 V
2
Linear scale power supply 0 V
PS
5
Serial data (+)
/PS
6
Serial data (–)
Shield
Shell
–
–
3
*
–
–
4
*
–
∗
∗
Serial converter unit
Linear scale
made by Heidenhain
1
9
3
7
4
2
11
14
1
COS
PS
/PS
PG5V
PG5V
PG0V
PG0V
SIN
REF
/REF
5V
0V
/SIN
/COS
2
6
1
5
5
6
1
2
CN2
9
3
7
4
2
11
14
Shielded wire
Shielded wire
Connector
shell
Connector
shell
Connector
shell
Connector
shell
SERVOPACK
Output line-driver
SN75ALS194 manu-
factured by Texas
Instruments Japan, or the
equivalent
CN2
CN1
CN1
CN1
19
0V
SG
16
PAO
/PAO
PBO
/PBO
PCO
/PCO
17
18
20
21
22
Connector
shell
Phase A
Phase B
Phase C
∗
0 V
Phase
A
Phase
B
Phase
C
Line receiver
Host controller
R
R
R
