H2Scan 4799 Transformer communication driver is the driver to communicate with Hydrogen Analyzer of H2scan Corp. in U.S.A.
<Figure 1> is read setting example of H2Scan 4799 Transformer communication driver.
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| <Figure 1> Read setting example of H2Scan 4799 Transformer communication driver |
Device part of <Figure 1> input Com Port(COM1), Baud Rate(19200), Parity Bit(0), Data Bit(8), Stop Bit(1) respectively according to setting of controller.
Also you can set 'One Packet Data Size¡¯ (200 ~ 3000, default : 166) by using option part.
H2Scan 4799 Transformer communication driver read schedule
Read schedule setting parameters are as follows:
1) STATION – don't care.
2) Read command – command = READ. ( Refer to <Table 1> )
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. ( refer to <Table 1> )
Note) H2Scan 4799 Transformer communication driver read the packet data that periodicaly send from controller. So, the communication driver don't send read request packet.
H2Scan 4799 Transformer can set periodical sending data time by using 'V' command( 1 second unit ) at 'Write settings'.
Read schedule example)
READ, 0, READ, 0, 0, 1,
<Table 1> is data saving address and contents for READ command.
Data Saving Address |
Contents |
Start Add + 0 |
Time Sec value, readed total Time Sec value |
Start Add + 1 ~ 3 |
readed Time Sec value, hour, minute, second |
Start Add + 4 |
PCB Temperature value |
Start Add + 5 |
Sensor Temperature value |
Start Add + 6 |
ResAdc |
Start Add + 7 |
AdjRes |
¡¦ |
¡¦ |
| <Table 1> Data saving address and contents for READ command | |
H2Scan 4799 Transformer GMPC II communication driver store the same data in WORD, DWORD, FLOAT, DOUBLE, STRING memory, but the data format are different.
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.
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| <Figure 2> Example of H2Scan 4799 Transformer communication driver¡¯s Option dialogue box |
You can set read schedule by using 
, 
, 
button and listbox of <Figure
2>.
One packet data size can set by using the part of 'One Packet Data Size' shown in <Figure 2>.
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| <Figure 3> Example of H2Scan 4799 Transformer 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.
You can set H2Scan 4799 Transformer by using write settings.
Digital Write
Digital write and analog write have the same setting parameters except output value.
Analog Write
Analog 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 = ESC, SP, ., ', ;, V. ( Refer to <Table 2> )
5) Extra2 Don't care.
<Table 2> is write command and contents of H2Scan 4799 Transformer communication driver.
| Write command | Contents |
| ESC | Stops Continuous Display to Enter a Password or Command |
| SP | Pressing The Space Key |
| . | Display Current Status |
| ¡® | Append a User Comment to the End of Current Line |
| V | Verbose Mode(1 Second Period) Enable/Disable |
| <Table 2> Write command and contents of H2Scan 4799 Transformer communication driver | |
Write example 1)
PORT : 0 STATION : 0 ADDRESS : 0000 EXTRA1 : . EXTRA2 : 0
The setting parameter shown above is Display Current Status read example.
Write example 2)
PORT : 0 STATION : 0 ADDRESS : 0000 EXTRA1 : V EXTRA2 : 0
The setting parameter shown above is Verbose Mode(1 Second Period) Enable(On)/Disable(Off) setting example.
Block Write
H2Scan 4799 Transformer communication driver don't support 'Block write'.
Connection of communication cable is as follows.
Connection of communication cable
Please connect serial communication cable to H2Scan 4799 Transformer such as <Figure 4>.
<Figure 4> is appearance of H2Scan 4799 Transformer controller.
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| <Figure 4> Apperance of H2Scan 4799 Transformer controller |