Granville Vacuum Gauge307 communication driver

Granville Vacuum Gauge307 communication driver is the driver to communicate with Vacuum Gauge Controller of Helix Technology Corporation in U.S.A.

1. Read settings

<Figure 1> is read setting example of Granville Vacuum Gauge307 communication driver. 

<Figure 1>  Read setting example of Granville Vacuum Gauge307 communication driver

Device part of  <Figure 1> input Com Port(COM1), Baud Rate(300), Parity Bit(0), Data Bit(7), Stop Bit(2) respectively according to setting of controller.

Baud rate, parity bit, data bit, stop bit can set by using dip switch of communication module(refer to chapter 4). 

Note) Default communication setting of Granville Vacuum Gauge307 are 300 bps, 0 parity, 7 data bit, 2 stop bit.

Granville Vacuum Gauge307 communication driver read schedule

Read schedule setting parameters are as follows:

1) STATION – Don't care. ( Fixed to 0 )

2) Read command – command = DGS, DS IG1,  DS IG2,  DS CG1,  DS CG2, PCS,  PCS 1 ~ 6,  PCS G. ( Refer to <Table 1> )

DGS – read of Degas status (0 or 1 status value),

DS IG1,  DS IG2,  DS CG1,  DS CG2 – Pressure read for each gauge,

PCS,  PCS 1 ~ 6,  PCS B  - Channel Status read. (PCS = all channel read,   PCS B = read all channel and save by bit unit), 

3) Read start address – Don't care.

4) Save Start Address for Communication Server – saveing start address of Communication Server.

5) Read Size – Read size = fixed to 1. ( PCS command = 6, other command = 1)

Read schedule example)

FLOAT,     0,  DS IG1,     0,    0,    1,

FLOAT,     0,  DS IG2,     0,    1,    1,

READ,      0,      PCS,     0,    0,    1,

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

<Figure 2> Example of Granville Vacuum Gauge307 communication driver’s Option dialogue box

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

<Figure 3> Example of Granville Vacuum Gauge307 communication driver’s read schedule Add/Edit dialogue box

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

2. Writing settings

You can set Granville Vacuum Gauge307 controller by using write settings. 

Digital Write

Digital write setting parameters are as follows:

1)  PORT                   Port no. (0 ~ 255)

2)  STATION             Don't care.

3)  ADDRESS          Don't care.

4)  Extra1                  Write command.

DG  - Degas ON/OFF control command,

IG1 – IG1 ON/OFF control command,

IG2 – IG2 ON/OFF control command. 

5)  Extra2                   Don't care.

Write example 1)

PORT : 0  Station : 0,  ADDRESS : 0000,  EXTRA1 : IG1,  EXTRA2 : 0

The setting parameter shown above is IG1 On/Off control example for Granville Vacuum Gauge 307 controller.

Write example 2)

PORT : 0  Station : 0,  ADDRESS : 0000,  EXTRA1 : IG2,  EXTRA2 : 0

The setting parameter shown above is IG2 On/Off control example for Granville Vacuum Gauge 307 controller.

Analog Write

Analog write and digital write have the same setting parameters except output value. 

3. Connection of communication cable

 Connection of communication cable is as follows.

Connection of communication cable

Please connect normal RS-232C communication cable to communication module of Granville Vacuum Gauge307 Controller.

<Figure 4> is appearance of  Granville Vacuum Gauge307 controller.

<Figure 4> Appearance of  Granville Vacuum Gauge307 controller

Setting of communication parameter

communication module of Granville Vacuum Gauge307 Controller have 8 Dip switch for setting of communication parameter such as <Figure 5>.

<Table 2> and <Table 3> are dip switch setting method for baud rate and data, parity, stop bit.

Note) Dip switch of communication parameter : On = communication module side.

<Figure 5> Dip switch and communication module appearance of  Granville Vacuum Gauge307 controller