EHWA UPS communication driver is the driver to communicate with uninterruptible power supply 065 (Single) model controller of Ewha Technologies Information Co,. Ltd. in Korea.
<Figure 1> is read setting example of EHWA UPS communication driver.
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| <Figure 1> Read setting example of EHWA UPS communication driver |
Device part of <Figure 1> input Com Port(COM1), Baud Rate(fixed to 2400), Parity Bit(2), Data Bit(7), Stop Bit(1) respectively, according to setting of controller.
EHWA UPS communication driver’s read schedule
Read schedule setting parameters are as follows:
1) Station – Controller station number.
2) Read Command – Command = G,a,b,c,d,e,f.... ( Refer to <Table 1> ~ <Table 7> )
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. ( Refer to <Table 1> ~ <Table 7> )
Read schedule example)
READ, 0, G, 0, 0, 1,
READ, 0, a, 0, 3, 1,
READ, 0, b, 0, 10, 1,
READ, 0, c, 0, 20, 1,
READ, 0, d, 0, 30, 1,
READ, 0, e, 0, 40, 1,
READ, 0, f, 0, 50, 1,
<Table 1> ~ <Table 7> are data saving address and contents of each read command.
| Data Saving Address | Contents | Remarks |
| Start Add + 0 | Status of event | 1 : don't exist event, 3 : new event |
Start Add + 1 |
Status of current UPS |
15 bit : LOAD OFF, 14 bit : Command reset.., 13 bit : Q1 open, 12 bit : Inverter on, 11 bit : Not used, 10 bit : Acoustic alarm, 9 bit : Detour on, 8 bit : Main rectifier on, 7 bit :
5 bit : Program stop active, 4 bit : Rectifier on, 3 bit : Alarm active, 2
bit :
1 bit :
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| <Table 1> Data saving address and contents of 'G' read command | ||
| Data Saving Address | Contents | Remarks |
| Start Add + 0 | Line voltage 1 | Load - measures |
| Start Add + 1 | Line voltage 2 | |
| Start Add + 2 | Line voltage 3 | |
| Start Add + 3 | Line current 1 | |
| Start Add + 4 | Line current 2 | |
| Start Add + 5 | Line current 3 | |
| Start Add + 6 | Load percent | |
| <Table 2> Data saving address and contents of 'a'(Load-measures) read command | ||
| Data Saving Address | Contents | Remarks |
| Start Add + 0 | Line voltage 1 | Invert- measures |
| Start Add + 1 | Line voltage 2 | |
| Start Add + 2 | Line voltage 3 | |
| Start Add + 3 | Phase voltage 12 | |
| Start Add + 4 | Phase voltage 23 | |
| Start Add + 5 | Phase voltage 31 | |
| Start Add + 6 | Frequency(0.1 unit) | |
| <Table 3> Data saving address and contents of 'b'(Invert-measures) read command | ||
| Data Saving Address | Contents | Remarks |
| Start Add + 0 | Bypass line voltage 1 | Main - measures |
| Start Add + 1 | Bypass line voltage 2 | |
| Start Add + 2 | Bypass line voltage 3 | |
| Start Add + 3 | Rectifier phase voltage 12 | |
| Start Add + 4 | Rectifier phase voltage 23 | |
| Start Add + 5 | Rectifier phase voltage 31 | |
| <Table 4> Data saving address and contents of 'c'(Main-measures) read command | ||
| Data Saving Address | Contents | Remarks |
| Start Add + 0 | Voltage |
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| Start Add + 1 | Current | |
| Start Add + 2 | Autonomy :Battery remain time(30 seconds unit) | |
| Start Add + 3 | Temperature(0.1 unit) | |
| <Table 5> Data saving address and contents of 'd'(Battery-measures) read command | ||
| Data Saving Address | Contents | Remarks |
| Start Add + 0 | Load percent(0 ~ 100) | Mixed - measures |
| Start Add + 1 | Invert frequency (0.1 unit) | |
| Start Add + 2 | Autonomy :Battery remain time(30seconds unit) | |
| <Table 6> Data saving address and contents of 'e'(Mixed-measures) read command | ||
| Data Saving Address | Contents | Remarks |
| Start Add + 0 | Rectifier output dc current | Rect I dc - measures |
| <Table 7> Data saving address and contents of 'f ' (Rect I dc-measures) read command | ||
You can write the setting value by using write settings.
Digital Write
Digital write setting parameters are as follows:
1) PORT Port no. (0 ~ 255)
2) STATION Controller station number.
3) ADDRESS Don't care.
4) Extra1 Write command.
0 : alarm reset,
2 : load on mains,
3 : load on invert,
4 : invert off,
5 : invert on,
6 : rectifier off,
7 : rectifier on,
8 : ups on,
9 : ups standby.
5) Extra2 Don't care.
Write example 1)
Port : 0, Station : 0, Address : 0000, EXTRA1 : 0, EXTRA2 : 0
The setting parameter shown above is alarm reset control example at 0 controller station.
Analog Write
Analog write and digital write have the same setting parameters except output value.