LDMS Controller communication driver is the driver to communicate with controller of TTS.
<Figure 1> is read setting example of LDMS Controller communication driver.
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| <Figure 1> Read setting example of LDMS Controller 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 controller.
Note) Baud rate, station address of LDMS Controller can set by SB, SA write command.
LDMS Controller communication driver read schedule
1) Station – 0 ~ 10 station number. ( can change by SA write command )
2) Read command – Command = RP, RA, RIA, RIB, ROA, ROB, RH, RL, RU. ( refer to <table 1> )
3) Read start address – don't care.
4) Save start address for Communication Server – Saving start address of Communication Server.
5) Read Size – Fixed to 1.
Read schedule example)
READ, 1, RP, 0, 0, 1,
READ, 1, RH, 0, 1, 1,
READ, 1, RL, 0, 2, 1,
<Table 1> is read command and contents of LDMS Controller communication driver.
| Read command | Contents | Read data |
| RP | Read Pressure | pressure(FLOAT data format) |
| RA | Read Address | 1 ~ 10 controller station address |
| RIA | Read Input A | Input A/B value 1 : ON, 0 : OFF |
| RIB | Read Input B | |
| ROA | Read Output A | Output A/B
value 1 : ON, 0 : OFF |
| ROB | Read Output B | |
| RH | Read High Set Point | High Set Point value(FLOAT data format) |
| RL | Read Low Set Point | Low Set Point value(FLOAT data format) |
| RU | Read Unit | unit value, also save at STRING memory, 1 = MBAR, 2 = PASCAL, 4 = TORR, 128 = other타 |
| <Table 1> Read command and contents of LDMS Controller communication driver | ||
LDMS Controller communication driver store the same data in WORD, DWORD, FLOAT, STRING(only relating data, KU read command) memory, but the data format are different.
If you click the icon
in protocol option part, you can see the dialog
box such as <Figure 2>. you can also set read schedule by using this part.
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| <Figure 2> Example of LDMS Controller communication driver’s Option dialog box |
You can set read schedule by using
,
,
button and listbox of <Figure 2>.
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| <Figure 3> Example of LDMS Controller communication driver’s read schedule Add/Edit dialog box |
When you click Add button or Edit button in dialogue box of <Figure 2>, dialogue box of <Figure 3> will be shown.
You can set LDMS controller by using 'writing settings'.
Digital write
Digital write and analog write have the same setting parameters except output value(0 or 1).
Analog Write
Analog write setting parameters are as follows:
1) PORT Port no. (0 ~ 255)
2) STATION 0 ~ 10 station number. ( can change by SA write command )
3) ADDRESS don't care.
4) Extra1 write command = SA, SH, SL, SU, SPO, SB, RST, SF. ( refer to <Table 2> )
5) Extra2 don't care.
<Table 1> is write command and contents of LDMS Controller communication driver.
| Write command | Contents | Range |
| SA | Set Address Offset | 1 ~ 10 |
| SH | High Set Point Write | Float value |
| SL | Low Set Point Write | |
| SU | Set Unit | 1 = MBAR, 2 = PASCAL, 4 = TORR |
| SPO | Set Pressure Offset | 0 ~ 200, 100 = intermediate, unit = mV |
| SB | Set Baud Rate | 1 = 300
bps, 2 = 600 bps, 3 = 1,200 bps, 4 = 2,400 bps, 5 = 4,800 bps, 6 = 9,600 bps, 7 = 19,200 bps, 8 = 38,400 bps, 9 = 57,600 bps, 10 = 115,200 bps |
| RST | Reset Module | none, after writing initialize Default value |
| SF | Set Frequency | 1 = 10, 2= 50, 3 = 100, 4 = 200, 5 = 500 |
| <Table 2> Write command and contents of LDMS Controller communication driver. | ||
Write example 1)
PORT:0, station:1, ADDRESS:000B, Extra1: SA, Extra2 : 0
The setting parameter shown above is station address setting example. ( setting address range = 1 ~ 10 )
Write example 2)
PORT:0, station:1, ADDRESS:000B, Extra1: SF, Extra2 : 0
The setting parameter shown above is Frequency setting example. ( setting range = 1 ~ 5, real value = 10 ~ 500 )
Write example 2)
PORT:0, station:1, ADDRESS:000B, Extra1: SU, Extra2 : 0, Output value = 1
The setting parameter shown above is Unit setting example to MBAR.
Connection of communication cable and main power are as follows.
Connection of RS-485 communication cable
Please connect 8, 9 pin of 15pin socket and +, - connector of computer(RS-485) such as <Figure 3>.
<Figure 4> is appearance of LDMS controller.
15pin socket of LDMS Controller RS-485 of computer
8 pin (+) -------------------------- + connector
9 pin (-) -------------------------- - connector
Connection of main power
Please connect main DC power to 1(+), 2(-) pin of 15pin socket such as <Figure 4>.
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| <Figure 4> Appearance of LDMS controller |