1:1 Connection
1:n Connection
Maximum number of External Devices is 64.
n:1 Connection
Maximum number of Displays are 4.*1
*1 Number of connecting units is the unit number when connecting the Display only. Number of connecting Display will be limited by the number of other External Devices which is connected by Ethernet.
n:m Connection
Maximum number of Displays are 4.*1
Maximum number of External Devices is 64.
*1 Number of connecting units is the unit number when connecting the Display only. Number of connecting Display will be limited by the number of other External Devices which is connected by Ethernet.
Examples of communication settings of the Display and the External Device, recommended by Pro-face, are shown.
WARNING
UNINTENDED EQUIPMENT OPERATION
Read and understand the instructions in this section to ensure data is properly transferred.
Range of supported device address is shown in the table below. Please note that the actually supported range of the devices varies depending on the External Device to be used. Please check the actual range in the manual of your External Device.
WARNING
UNINTENDED EQUIPMENT OPERATION
The supported function code list is shown below.
Function Code (Hex) |
Description |
|---|---|
FC01(0x01) |
Read the ON/OFF status of the slave coil (0X). |
FC02(0x02) |
Read the ON/OFF status of the slave discrete input (1X). |
FC03(0x03) |
Read the description of the slave holding register (4X). |
FC04(0x04) |
Read the description of the slave input register (3X). |
FC05(0x05) |
Change (Write) the slave coil (0X) status to either ON or OFF. |
FC06(0x06) |
Change (write) the description of the slave holding register (4X). |
FC15(0x0F) |
Change (Write) the slave consecutive multiple coils (0X) status to either ON or OFF. |
FC16(0x10) |
Change (write) the descriptions of the slave consecutive multiple holding registers (4X). |
The following table shows the equivalence between IEC61131 syntax and MODBUS syntax address descriptions.
Device |
MODBUS Syntax
|
IEC61131 Syntax |
||||||
|---|---|---|---|---|---|---|---|---|
Format |
0 start |
1 start |
||||||
Format |
Range |
First element |
Range |
First element |
Range |
First element |
||
Coil |
000001+i |
i = 0 to 65535 |
000001 |
%Mi |
i = 0 to 65535 |
%M00000 |
i = 1 to 65536 |
%M00001 |
Discrete Input |
100001+i |
i = 0 to 65535 |
100001 |
- |
- |
- |
- |
- |
Input Register (Word) |
300001+i |
i = 0 to 65535 |
300001 |
- |
- |
- |
- |
- |
Input Register (Word bit) |
300001+i,j |
i = 0 to 65535 j = 0 to 15 |
300001,00 |
- |
- |
- |
- |
- |
Holding Register (Word) |
400001+i |
i = 0 to 65535 |
400001 |
%MWi |
i = 0 to 65535
|
%MW00000 |
i = 1 to 65536
|
%MW00001 |
Holding Register (Word bit) |
400001+i,j |
i = 0 to 65535 j = 0 to 15 |
400001,00 |
%Mwi:Xj |
i = 0 to 65535 j=0 to 15 |
%MW00000:X00 |
i = 1 to 65535 j=0 to 15 |
%MW00001:X00
|