Mitsubishi Electric 800 Series Instruction Manual page 299

(D) Operation command and frequency command
Switching operation mode by external signal (X16 signal)
• When External operation and the operation from the operation panel are used together, the PU operation mode and
External operation mode can be switched during a stop (during motor stop, start command OFF) by using the PU-External
operation switchover signal (X16).
• When Pr.79="0", "6" or "7", switching between the PU operation mode and External operation mode is possible. (When
Pr.79="6", the switchover can also be made during operation.)
• To input the X16 signal, set "16" in any of Pr.178 to Pr.189 (Input terminal function selection) to assign the function to a
terminal.
X16 signal status and operation
Pr.79
setting
ON (External)
External operation
0 (initial value)
mode
1 PU operation mode
2 External operation mode
3, 4 External/PU combined operation mode
External operation
6
mode
X12 (MRS)
External operation
mode
ON
7
X12 (MRS)
External operation mode
OFF
NOTE
• The status of the operation mode follows the Pr.340 Communication startup mode selection setting and the ON/OFF state
of the X65 and X66 signals. (For details, refer to
• The priority among Pr.79 and Pr.340 and signals is Pr.79 > X12 > X66 > X65 > X16 > Pr.340.
• Changing the terminal assignment using Pr.178 to Pr.189 (Input terminal function selection) may affect the other
functions. Set parameters after confirming the function of each terminal.
Switching the operation mode by external signals (X65, X66 signals)
• When Pr.79 ="0, 2 or 6", the PU operation mode and External operation modes can be changed to the Network operation
mode during a stop (during motor stop, start command OFF) by the PU/NET operation switchover (X65) signal, the
External/NET operation switchover (X66) signal. (When Pr.79 = "6", switchover is enabled during operation.)
• To switch between the Network operation mode and the PU operation mode
1) Set Pr.79 = "0 (initial value) or 6".
2) Set Pr.340 Communication startup mode selection="10 or 12".
3) Set "65" in any of Pr.178 to Pr.189 to assign the PU/NET operation switchover (X65) signal to a terminal.
4) When the X65 signal is ON, the PU operation mode is selected. When the X65 signal is OFF, the Network operation
mode is selected.
Pr.340 Pr.79
setting setting
0 (initial value)
1
2
3, 4
10, 12 6
X12 (MRS)
7
X12 (MRS)

When the X66 signal is ON, the NET operation mode is selected.

When the X16 signal is OFF, the PU operation mode is selected. Also, when "0" is set for Pr.550 NET mode operation command source
selection and the communication option is not connected (communication option is the command source), the PU operation mode is selected.
298
PARAMETERS
mode
OFF (PU)
PU operation mode
PU operation mode
PU operation mode
X65 signal state
ON (PU)
PU operation mode
PU operation mode
NET operation mode
External/PU combined operation mode
PU operation mode
Switching between the External operation
mode and PU operation mode is enabled.
ON
External operation mode
OFF
Switching among the External, PU, and NET operation modes is
enabled.
PU operation mode fixed
External operation mode fixed. (Switching to NET operation mode is
enabled.)
External/PU combined operation mode fixed
Switching among the External, PU, and NET operation mode is
enabled while running.
Switching among the External, PU, and NET operation mode is
enabled. (In the External operation mode, output shutoff.)
External operation mode fixed. (Forcibly switched to External
operation mode.)
page 298.)
OFF (NET)
NET operation mode
 
NET operation mode
 

REMARKS
REMARKS
―
PU operation mode fixed
NET operation mode fixed
External/PU combined operation mode fixed
Switching between operation modes is enabled
while running.
Output is shutoff in the External operation mode.
The operation mode is forcibly switched to the
External operation mode.