.files/image001.jpg)
This helps explain how Communication Program communicates with NV4016V of JoongAng Control CO., LTD. in Korea by using DLL-MODBUS2 communication driver.
(For details of MODBUS2 communication driver, refer DLL-MODBUS2.)
<Figure 1> is MODBUS2 communication driver read setting examples for NV4016A.
<Figure 1> Read setting example for NV4016A
Read schedule for NV4016A
1) Station : Equipment ID. ( 0 ~255 )
2) Read Command : 4
3) Read Start Address : 12288 ~ 12294 (Refer to <Table 1>)
4) Save Start Address for Communication Server : saveing start address of Communication Server.
5) Read Size : Fixed to 1.
Read schedule example)
READ, 1, 4, 12288, 0, 1,
READ, 1, 4, 12289, 1, 1,
READ, 1, 4, 12290, 2, 1,
READ, 1, 4, 12291, 3, 1,
READ, 1, 4, 12292, 4, 1,
READ, 1, 4, 12293, 5, 1,
READ, 1, 4, 12294, 6, 1,
<Table 1> is a description of read address and content NV4016A.
| Read Address | Content | Value Range | Data Type |
| 12288 | Switch All | 0 ~ 63 | WORD |
| 12289 | Switch 1 | 0 or 1 | WORD |
| 12290 | Switch 2 | 0 or 1 | WORD |
| 12291 | Switch 3 | 0 or 1 | WORD |
| 12292 | Switch 4 | 0 or 1 | WORD |
| 12293 | Switch 5 | 0 or 1 | WORD |
| 12294 | Switch 6 | 0 or 1 | WORD |
| <Table 1> Read address and content of NV4016A | |||
You can control the switch of NV4016 by using write commands.
Bit write
NV4016A doesn't supprot bit write.
Word write
Word write setting parameters are as follows:
1) PORT : Port Number.
2) STATION : Equipment ID. ( 0 ~255 )
3) ADDRESS : 12288 ~ 12294 (Refer to <Table 1>)
4) EXTRA 1 : 16
5) EXTRA 2 : don't care.
Example 1)
PORT : 0 STATION : 1 ADDRESS : 12288 EXTRA1 : 16 EXTRA2 : 0 / Value : 1
The setting parameter shown above is an example of word write for turning on all switch of NV4016A connected with 0 port, set to 1 station.
Example 2)
PORT : 0 STATION : 1 ADDRESS : 12288 EXTRA1 : 16 EXTRA2 : 0 / Value : 0
The setting parameter shown above is an example of word write for turning off all switch of NV4016A connected with 0 port, set to 1 station.
Example 3)
PORT : 0 STATION : 1 ADDRESS : 12289 EXTRA1 : 16 EXTRA2 : 0 / Value : 1
The setting parameter shown above is an example of word write for turning on first switch of NV4016A connected with 0 port, set to 1 station.
Example 4)
PORT : 0 STATION : 1 ADDRESS : 12289 EXTRA1 : 16 EXTRA2 : 0 / Value : 0
The setting parameter shown above is an example of word write for turning off first switch of NV4016A connected with 0 port, set to 1 station.
<Figure 2> shows the appearance of NV4016A.
.files/image002.jpg) |
| <Figure 2> Appearance of NV4016A |