Applied Automation Totalflow 6400 connectivity to 3100-MCM
Problem Solution Overview
We performed testing between the subject device and our 3100-MCM product.
Solution Brief
Our testing generated the following results:
- We were able to successfully communicate with the device. (see below for configuration parameters used during the testing)
- The product supported Modbus functions 1,3,5,6 & 16
- Message turn around for this unit averaged 30ms
The purpose of our testing is to assure a level of compatibility in the communications between the two products. Through this testing, we attempt to identify problem areas that may arise when implementing the interface in the field.
Configuration:
The product testing was perfomed with the following settings used.
- Baud: 19200
- Parity: None
- Stop: 1
- Mode: RTU Master Mode
- Physical Connection : RS-232
The Module Configuration used in our testing was as follows:
|
Address
|
0
|
1
|
2
|
3
|
4
|
5
|
6
|
7
|
8
|
9
|
|
N7:0
|
0
|
0
|
6
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
N7:10
|
1
|
1
|
6
|
0
|
0
|
0
|
0
|
0
|
0
|
0
|
|
N7:20
|
4
|
1
|
2
|
130
|
150
|
0
|
0
|
0
|
4
|
0
|
This configuration, in combination with the example ladder logic referenced below, generates the following memory map:
N10:0 to N10:129 - Slave Data
N10:130 to N10:149 - Slave Error Table (Contains revision level information also)
N10:150 to N10:199 - Master Error Table (Contains status of commands for diagnostics)
Command List:
The following command list shows some of the commands which were used to test the communications:
|
Address
|
0
Port
Number
|
1
Slave
Number
|
2
Function
Code
|
3
Source
Address
|
4
Count
|
5
Dest.
Address
|
6
Read
Type
|
|
N7:50
|
1
|
1
|
1
|
1001
|
1
|
0
|
0
|
|
N7:60
|
1
|
1
|
5
|
3200
|
1
|
1001
|
0
|
|
N7:70
|
1
|
1
|
16
|
201
|
10
|
110
|
0
|
|
N7:80
|
1
|
1
|
3
|
8001
|
10
|
10
|
0
|
Our test command list perfoms the following functions.
- N7:50 Read Binary register 1001.
- N7:60 Write Binary register 1001.
- N7:70 Setup user defined type.
- N7:80 Read back user defined type.
Cable Connection:
The physical connection which was used during testing was as follows:
|
3100-MCM
Module
|
|
Device
|
|
2 TXD
|
-------------------------
|
Terminal 4
|
|
3 RXD
|
-------------------------
|
Terminal 6
|
|
7 GND
|
-------------------------
|
Terminal 1
|
|
4 RTS
|
----------|
|
Terminal 8
|
|
5 CTS
|
----------|
|
Terminal 9
|
Note: RTS/CTS (Terminals 8 & 9) must be jumpered on the Totalflow as well.
Additional Comments and Observations:
- Register reads with a memory address greater then 5000 will return 2 words for each value requested. If you have a need to write to these registers please contact ProSoft Technology for further details.
- All registers in a custom group will be type cast to floating point before being returned.
|
