MelSer I/O J4 Series Communication Driver

MelSer I/O J4 Series is the driver to communicate with AC Servo J4 series of Mitsubishi Electric  in Japan.

1. Read settings

<Figure 1> is read setting example of MelSer I/O J4 Series communication driver.

<Figure 1> Read setting example of MelSer I/O J4 Series communication driver

Device part of  <Figure 1> input Com Port( COM7 ), Baud rate( 19200 ), Parity Bit ( 2 ), Data Bit ( 8 ), Stop Bit ( 1 ) respectively, accordint to the setting of controller.

Read schedule of MelSer I/O J4 Series communication driver

Read schedule setting parameters are as follows:

1) station – 0 ~ 31 station number.

2) read command – Command : STS, ALARM, G_PARA, CURR, HIGH, LOW, ABB, WRITE, IO, H_ALM, S_ALM, TEST  ( refer to <Table 1> ).  Also you can input 0 ~ FF command number.

3) data number – 0 ~ 255 data number.

4) Save start address for Communication Server – Saving start address of Communication Server.

5)    Read size – fixed to 1.

Read schedule example)

READ, 1, CURR, 1, 0, 1,
READ, 1, CURR, 2, 1, 1,
READ, 1, CURR, 3, 2, 1,
READ, 1, IO, 0, 3, 1,
READ, 1, ALARM, 0, 5, 1,

<Table 1> is read command and readed data saving value MelSer I/O J4 Series for communication driver.

MelSer I/O J4 Series communication driver store the same data in WORD, DWORD, FLOAT memory, but the data format are different.

However, STS( 0 ~ 41 data number ), ABB, S_ALM( 0 ~ 41 data number ) read command save only STRING memory.

If you click the icon  in protocol option part at <Figure 1>, you can see the dialog box such as <Figure 2>. you can also set read schedule by using this part.  

<Figure 2> Example of MelSer I/O J4 Series communication driver’s Option dialog box

You can set read schedule by using , ,  button and listbox of <Figure 2>.

<Figure 3> Example of MelSer I/O J4 Series communication driver’s read schedule Add/Edit dialog box

When you click Add button or Edit button in dialogue box of <Figure 2>, dialogue box of <Figure 3> is shown.

2. Write settings

You can control MelSer I/O J4 Series by using 'write settings'. 

Digital Write

Digital write and analog write have the same setting parameters except output value. 

Analog Write 

Analog write setting parameters are as follows:

1)  PORT           Port no. (0 ~ 255)

2) Station         0 ~ 31 station number.

3) Address       0 ~ 255 data number when PARA write command, etc command : don't care.

4) Extra1          Write command : C_STS, PARA, G_PARA, IO_I, IO_T, IO_S, H_ALM, C_ALM, I_OFF, DO_BAN, I_REL, DO_REL, MODE, T_VEL, T_CON, T_MOV, T_DIR, T_RUN, T_STO ( refer to <Table 2> ).

5) Extra2          write mode and dot position of output value when PARA write command.

write mode : 10 digit - 1 =  write to EEP-ROM,

                                          0 =  write to RAM,

dot : 0 = integer, 1 ~ 4 = dot 1 ~ 4 digit.

<Table 2> is write command and output value for MelSer I/O J4 Series for communication driver.

Write example 1) 

PORT : 0   STATION : 1   ADDRESS : 0001  EXTRA1 : PARA  EXTRA2 :  0

The setting parameter shown above is current parameter setting example for data number 1, station 1.

( write mode = write to RAM, dot = 0 )

Write example 2) 

PORT : 0   STATION : 1   ADDRESS : 0002  EXTRA1 : PARA  EXTRA2 :  11

The setting parameter shown above is current parameter setting example for data number 2, station 1.

( write mode = write to EEP-ROM, dot = 1 )

Write example 3) 

PORT : 0   STATION : 1   ADDRESS : 0000  EXTRA1 : G_PARA  EXTRA2 :  0   Output value = 0

The setting parameter shown above is parameter group setting example to default ( 0 ) setting parameter.

3. Appearance of MelSer I/O J4

<Figure 4> shows the appearance of MelSer I/O J4 controller.

<Figure 4> Appearance of MelSer I/O J4 controller

<Figure 5> is command, data number and contents for read command of MelSer I/O J4 Series communication driver.

<Figure 5> Command, data number and contents for read command of MelSer I/O J4 Series communication driver

<Figure 6> is command, data number and contents for write command of MelSer I/O J4 Series communication driver

<Figure 6> Command, data number and contents for write command of MelSer I/O J4 Series communication driver