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I-8000 Controller 006

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Q:Can I use ISaGRAF controller (I-8417/8817/8437/8837, I-7188EG/XG) as a Modbus Master controller to gather data from other Modbus devices ?

Ans: Yes. These ISaGRAF controllers all support Modbus Slave & Master protocol. PC, HMI & touch monitor which support Modbus can talk to these controllers by connecting to their Modbus slave ports. At the same time, these controllers can also use only one of their Modbus master ports to talk to other devices which support Modbus slave protocol.

 

I-8417/8817

I-8437/8837

I-7188EG

I-7188XG

COM1

Modbus slave (RS232)

Modbus slave (RS232)

Modbus slave (RS232)

Modbus slave

(RS232 or RS485)

COM2

Modbus slave (RS485)

N/A

(RS485)

1.  Modbus master protocol

2.  I-7000 & I-87K remote I/O protocol

3.  User-defined or 3rd party protocol

(RS485)

1.  Modbus master:RS485

2.  I-7000 & I-87K remote I/O protocol

3.  User-defined or 3rd party protocol

Ethernet

 

N/A

1.  Modbus slave (TCP/IP)

2. Ebus

1.  Modbus slave (TCP/IP)

2. Ebus

N/A

COM3

1.  Modbus master (RS232 or RS485)

2.  Fbus (RS485)

3.  I-7000 & I-87K remote I/O protocol (RS485)

4.  User-defined or 3rd party  protocol (RS232 or RS485)

1.  Modbus master (RS232 or RS485)

2.  Fbus (RS485)

3.I-7000 & I-87K remote I/O protocol (RS485)

4.User-defined or 3rd party  protocol (RS232 or RS485)

(Need extra X503~X514)

User-defined or 3rd party  protocol (RS232 or RS485)

(Need extra X503~X514)

User-defined or 3rd party  protocol (RS232 or RS485)

COM4

(RS232)

1. Modbus master

2.  I-7000 & I-87K remote I/O protocol

3.  User-defined or 3rd party  protocol

4.  Modem-Link

(RS232)

1.   Modbus master

2.  I-7000 & I-87K remote I/O protocol

3. User-defined or 3rd party  protocol

4. Modem-Link

(Need extra X503~X514)

User-defined or 3rd party  protocol (RS232 or RS485)

(Need extra X503~X514)

User-defined or 3rd party  protocol (RS232 or RS485)

COM5

To

COM8

(Need extra I-8112/8114 or I-8142/8144)

User-defined or 3rd party  protocol (RS232 or RS485)

(Need extra I-8112/8114 or I-8142/8144)

User-defined or 3rd party  protocol (RS232 or RS485)

(Need extra X503~X514)

User-defined or 3rd party  protocol (RS232 or RS485)

(Need extra X503~X514)

User-defined or 3rd party  protocol (RS232 or RS485)

COM9

To

COM20

(Need extra I-8112/8114 or I-8142/8144)

5.  User-defined or 3rd party  protocol (RS232 or RS485)

(Need extra I-8112/8114 or I-8142/8144)

User-defined or 3rd party  protocol (RS232 or RS485)

N/A

N/A

Note: Sometimes Modbus slave protocol for serial port is also named as ˇ§Modbus RTUˇ¨ or ˇ§Modbus serialˇ¨.

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Written by Chun Tsai 

Date:2002/12/26