12. COMMUNICATION FUNCTION (MITSUBISHI ELECTRIC GENERAL-PURPOSE AC SERVO PROTOCOL)
12 - 8
12.3.8 Communication procedure example
The following example reads the set value of alarm history (last alarm) from the servo amplifier of station 0.
Data item
Value
Description
Station No.
0
Servo amplifier station 0
Command
3 3
Reading command
Data No.
1 0
Alarm history (last alarm)
Data = [0]
= [0][3][3]
Transmission data =
Other than error code
[A] or [a]?
3 consecutive times?
300 ms elapsed?
Start
Data make-up
Checksum calculation and
addition
Addition of SOH to make up
transmission data
Data transmission
Data receive
3 consecutive times?
Receive data analysis
End
100 ms after EOT transmission
Error processing
Error processing
No
Yes
Yes
Yes
No
No
No
No
Yes
Yes
Master station
Is there receive data?
Command
Data No.
Checksum = 30H + 33H + 33H + 02H + 31H + 30H + 03H =
46H 43H
Station No.
Slave station
Master station
Slave station
Master station
Slave station
ETX
STX
ETX
STX
3
3
1 0
+
+
+
+
ETX
SOH
0
STX
3
3
1
C
F
0
+
+
+
+
+
+
FCH
[1][0]
Summary of Contents for MR-JE-_A
Page 9: ...A 8 MEMO ...
Page 15: ...6 MEMO ...
Page 29: ...1 FUNCTIONS AND CONFIGURATION 1 14 MEMO ...
Page 139: ...4 STARTUP 4 38 MEMO ...
Page 187: ...5 PARAMETERS 5 48 MEMO ...
Page 221: ...6 NORMAL GAIN ADJUSTMENT 6 34 MEMO ...
Page 259: ...8 TROUBLESHOOTING 8 8 MEMO ...
Page 265: ...9 DIMENSIONS 9 6 MEMO ...
Page 273: ...10 CHARACTERISTICS 10 8 MEMO ...
Page 339: ...12 COMMUNICATION FUNCTION MITSUBISHI ELECTRIC GENERAL PURPOSE AC SERVO PROTOCOL 12 34 MEMO ...