Mitsubishi Electric 800 Series Function Manual page 30

(N) Operation via communication and its settings
Details of remote input and output signals
The following device No. are those for station 1.
For stations 2 and later, the device No. are different. (Refer to the master module manual for correspondence between the
device No. and station number)
 Output signals (master module to inverter)
The output signals from the master module are indicated. (Input signals to inverter)
Device
No.
RY0 Forward rotation command
RY1 Reverse rotation command
RY2 High-speed operation command (terminal RH function)
RY3 Middle-speed operation command (terminal RM function)
RY4 Low-speed operation command (terminal RL function)
RY5 Jog operation selection (terminal JOG function)
RY6 Second function selection (terminal RT function)
RY7 Current input selection (terminal AU function)
Selection of automatic restart after instantaneous power
RY8
failure (terminal CS function)
RY9 Output stop (terminal MRS function)
RYA Start self-holding selection (terminal STOP function)
RYB Reset (RES terminal function)
RY20 Monitor command
RY21 Frequency setting command (RAM)
Frequency setting command
RY22
(RAM, EEPROM)
RY23 Torque command / torque limit (RAM)
Torque command / torque limit
RY24
(RAM, EEPROM)
RY25 Instruction code execution request
RY3A Error reset request flag

Torque control cannot be performed with a PM motor.
30
PARAMETER
Signal Description
• When "1" is set, a start command is
0: Stop command
input to the inverter.
1: Forward rotation start
When "1" is set in RY0 and RY1, a stop
command is input.
0: Stop command
• The signals are fixed. They cannot be
1: Reverse rotation start
changed using parameters.
• Functions assigned to terminals RH, RM, RL, JOG, RT, AU, CS,
MRS, STOP and RES are activated.
• Signal names are initial values. Using Pr.180 to Pr.189, you can
change input signal functions. Note that some of signals do not
accept a command from the network according to the Pr.338 and
Pr.339 settings. For example, RYB reset (terminal RES function)
cannot be controlled via network. Refer to the Instruction Manual
(Detailed) of the inverter for the details of Pr.180 to Pr.189, Pr.338,
and Pr.339.
When "1" is set in the monitor command (RY20), the monitored
value is set in the remote register RWr26 to RWr2F, and "1" is set in
the monitoring (RX20). While "1" is set in the monitor command
(RY20), the monitored data is always updated.
When "1" is set in the frequency setting command (RY21), the set
frequency (RWw0) is written to RAM of the inverter. While "1" is set,
the set frequency (RWw0) is always applied.
After the writing completes, "1" is set in the frequency setting
completion (RX21).
When "1" is set in the frequency setting command (RY22), the set
frequency (RWw0) is written to RAM and EEPROM of the inverter.
After the writing completes, "1" is set in the frequency setting
completion (RX22).
To change the frequency consecutively, be sure to write data only to
the inverter RAM.
When "1" is set in the torque command / torque limit (RY23), the set
torque command / torque limit (RWw2) is written to RAM of the
inverter.
After the writing completes, "1" is set in the torque command /
torque limit setting completion (RX23).
The following value is written to RAM.
• During torque control : Torque command value

• During speed control / position control: Torque limit value
When "1" is set in the torque command / torque limit (RY24), the set
torque command / torque limit (RWw2) is written to RAM and
EEPROM of the inverter.
After the writing completes, "1" is set in the torque command /
torque limit setting completion (RX24).
The following value is written to RAM and EEPROM.
• During torque control : Torque command value

• During speed control / position control: Torque limit value
To change the torque command or the torque limit consecutively, be
sure to write data to the inverter RAM.
When "1" is set in the instruction code execution request (RY25),
processes corresponding to the instruction codes set to RWw10,
12, 14, 16, 18 and 1A are executed. "1" is set in the instruction code
execution request (RX25) after completion of instruction codes.
When an instruction code execution error occurs, a value other than
"0" is set in the reply code (RWr10, 12, 14, 16, 18 and 1A).
When "1" is set in the error reset request flag (RY3A) at an inverter
fault, the inverter is reset, then "0" is set in the error status flag
(RX3A). Refer to page 19 for operation conditions of inverter reset.