Mitsubishi Electric MELSEC iQ-R RD78G4 User Manual page 58

Synchronous encoder axis type
The following two types of synchronous encoders can be used as the synchronous encoder axis.
Refer to the following for the setting method for each synchronous encoder axis.
Page 58 Setting method for synchronous encoder
Synchronous encoder axis type
Synchronous encoder via servo amplifier
Synchronous encoder via CPU
When using an incremental synchronous encoder, connect the encoder with the high-speed counter module,
then set "[Pr.320] Synchronous encoder axis type" to "201: Synchronous encoder via CPU".
Control method for synchronous encoder axis
The following controls can be executed for the synchronous encoder axis by using "[Cd.320] Synchronous encoder axis
control start" and "[Cd.321] Synchronous encoder axis control method".
Setting value of "[Cd.321]
Synchronous encoder axis control
method"
0: Current value change
1: Counter disable
2: Counter enable
Units for the synchronous encoder axis
The position units and speed units for the synchronous encoder axis are shown below for the setting of "[Pr.321] Synchronous
encoder axis unit setting".
■Synchronous encoder axis position units
Setting value of "[Pr.321] Synchronous encoder axis unit setting"
Control unit
0: mm
1: inch
2: degree
3: pulse
2 INPUT AXIS MODULE
56
2.3 Synchronous Encoder Axis
Details
Used to use a synchronous encoder connected to the servo amplifier which supports the scale measurement
mode as a synchronous encoder axis.
Used to operate a gray code encoder that is connected to the input module of CPU module as a synchronous
encoder axis.
Control details
"[Md.320] Synchronous encoder axis position value" and "[Md.321] Synchronous encoder axis position value per
cycle" are changed based on the setting of "[Cd.322] Synchronous encoder axis position value setting address".
Input from the synchronous encoder is disabled.
Input from the synchronous encoder is enabled.
Number of decimal places for
position
0

9
0

9
0

9
0

9
Synchronous encoder Range
axis position unit
mm -2147483648 to 2147483647[mm]
 
-9
mm -2.147483648 to 2.147483647[mm]
10
inch -2147483648 to 2147483647[inch]
 
-9
inch -2.147483648 to 2.147483647[inch]
10
degree -2147483648 to 2147483647[degree]
 
-9
degree -2.147483648 to 2.147483647[degree]
10
pulse -2147483648 to 2147483647[pulse]
 
-9
10 pulse -2.147483648 to 2.147483647[pulse]