Harsen GU320a, Manual, Page: 18 / 23

GU320a Controller Manual
18
10.3 Central Pick-up Control Unit Communication Protocols
RS485 mechanism is a kind of network form by character signal between the computer and hardware
device. Controller working baud rate is 9600-Baud, communication protocol is
MODBUS-RTU.
When it is
working, the computer will send out a serial orders to the central pick-up controller, and then wait the reflect
data block..
NOTE: max byte (word) of write/read, read is 16, write is 14. Only continuous write order 10(hex)
could be used for write .
Controller Data Cell Address
Address Byte Content Unit
$1000 1 L3-N Voltage Ph-c phase voltage unit
：
V
$1001 1 L2-N Voltage Ph-B phase voltage unit
：
V
$1002 1 L1-N Voltage Ph-A phase voltage unit
：
V
$1003 1 L3-L1 Voltage AC phase and line voltage unit
：
V
$1004 1 L2-L3 Voltage BC phase and line voltage unit
：
V
$1005 1 L1-L2 Voltage AB phase and line voltage unit
：
V
$1006 1 L3 Current Ph-c phase current unit
：
A
$1007
1
L2 Current ph-B phase current
unit
：
A
$1008
1
L1 Current ph-A phase current
unit
：
A
$1009
1
L3 PF ph-c PF
$100A
1
L2 PF ph-B PF
$100B
1
L1 PF ph-C PF
$100C
1
Frequency Generator frequency
unit
：
0 . 1HZ
$100D 1 L3 VA Ph-C real power unit
：
K
VA
$100E 1 L2 VA Ph-B real power unit
：
K
VA
$100F 1 L1 VA Ph-A real power unit
：
K
VA
$1010 1 L3 W Ph-C active power unit
：
K W
$1011 1 L2 W Ph-B active power unit
：
K W
$1012 1 L1 W Ph-A active power unit
：
K W
$1013 1 L3 VAr Ph-C reactive power unit
：
K VAr
$1014 1 L2 Var Ph-B reactive power unit
：
K VAr
$1015 1 L1 VAr Ph-A reactive power unit
：
K VAr
$1016 1
T
acho Rotating speed of Speed sensor unit
：
RPM
$1017 1 OilPress value of oil p-sensor unit
：
Kpa
$1018 1 Coolant value of T-sensor unit
：℃
$1019 1 VBAT Battery voltage unit
：
V
$101A 1 VALT Charge excitation voltage unit
：
V
$101B 1 AI input voltage standby unit
：
mV
bit0
—
oil pressure
bit1
—
water temperature
bit2
—
emergency stop
bit3
—
remote control start
$101C 1
Bit4
—
switch signal standby
bit0
—
diesel engine oil
bit1
—
diesel engine start
bit2
—
Gen.set run in normal
bit3
—
Alarm output
bit4
—
Pre-alarm output
$101D 1
bit5
—
Idle speed output
$101E 1 LED
$101F 1 Palarm Pre-alarm code