8 COMMUNICATION FUNCTION (MITSUBISHI ELECTRIC AC SERVO PROTOCOL) [A]
8.5 Detailed explanations of commands
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Test operation mode
Even during operation, the servo amplifier can be switched to the test operation mode. In this case, switching to the test
operation mode will shut off the base circuit to coast the servo motor.
Precautions
• The test operation mode is designed for checking operation. Do not use it for an actual operation.
• If communication stops for 0.5 s or longer during test operation, the servo motor decelerates to a stop, resulting in servo-
lock. To prevent this, keep the communication all the time by monitoring the status display, etc.
How to set up and cancel test operation mode
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Setting up test operation mode
Set the test operation mode type with the following procedure.
1.
Selecting test operation mode
Transmit the command [8] [B] + data No. [0] [0] + data to set the test operation mode.
2.
Checking test operation mode
Read the set test operation mode from the slave station, and check that the mode has been set correctly.
• Transmission
Transmit the command [0] [0] + data No. [1] [2].
• Return
The slave station returns the set test operation mode.
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Canceling test operation mode
To cancel the test operation mode, transmit the command [8] [B] + data No. [0] [0] + data.
Command
Data No.
Transmission
data
Selecting test operation mode
[8] [B]
[0] [0]
0001
JOG operation
0002
Positioning operation
0004
Output signal (DO) forced output
Command
Data No.
Transmission
data
Selecting test operation mode
[8] [B]
[0] [0]
0000
Test operation mode cancel
0
0
0
Test operation mode reading
0: Normal mode (not test operation mode)
1: JOG operation
2: Positioning operation
4: Output signal (DO) forced output