8315 L&J Tankway Software Description

TankGate Interface

 

 

TankGate responds to the following Function Codes:

Function Code

Description

Comments

 

 

 

3

Read Output

FC 3 and FC 4 are treated the same. Use either FC 3 or FC 4

 

Register

to read data from the TankGate

 

 

 

4

Read Input

 

 

Register

 

 

 

 

5

Force Single

FC 4 and FC 6 are treated the same. Use either FC 5 or FC 6

 

Output

to write data to the TankGate

 

Status

 

 

 

 

6

Preset Single

 

 

Register

 

 

 

 

15

Force

FC 15 and FC 16 are treated the same. Use either FC 15 or

 

Multiple

FC 16 to write multiple registers to the TankGate

 

Outputs

 

16Preset Multiple Registers

There are two methods for data addressing within the TankGate

•The TankGate has a fixed Modbus Map of selected parameters

•Gateway Block (GWBLK) software blocks can be configured to set the data address

4.5.2Fixed Modbus Map

For each version of the TankGate, there is a fixed map of data registers. A partial example is shown below:

Address

Type

Number

Parameter

Data Type

 

 

 

 

 

5000

WV1900

0

Command

CODED

 

 

 

 

 

5001

WV1900

0

Level

REAL

 

 

 

 

 

5003

WV1900

0

Temp

REAL

 

 

 

 

 

5005

WV1900

0

Value

REAL

 

 

 

 

 

5007

WV1900

0

Status

HEX

 

 

 

 

 

5008

WV1900

0

PntStatus

IHEX

 

 

 

 

 

5009

WV1900

0

Elapse

TIME

 

 

 

 

 

5011

WV1900

1

Command

CODED

 

 

 

 

 

5012

WV1900

1

Level

REAL

 

 

 

 

 

5014

WV1900

1

Temp

REAL

 

 

 

 

 

5016

WV1900

1

Value

REAL

 

 

 

 

 

30

Installation and Operations Manual

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Varec 8315 Series manual Fixed Modbus Map, Function Code Description Comments, Address Type Number Parameter Data Type