GT-540P-3GWA-OEM1 user’s manual v1.0
2.
Hardware
2.1
Specifications
GT-540P-3GWA-OEM1
System
CPU
32 bit CPU
SRAM 64
KB
Flash Memory
512 KB
RTC
Gives time(sec, min, hour) & date, leap year compensation
Watchdog Yes
Micro SD Inerface
Max 2GB
Serial ports
COM1 RS-232
:
TXD,RXD,GND for configuration
COM2
RS-485
：
D+,D- for Modbus RTU device connectivity
Digital Input
Channels 6
Input Type
Sink or Source, Isolated channel with common power or
ground
Off Voltage Level
+1V max.
On Voltage Level
+3.5 ~ 30 VDC
Isolated Voltage
3750Vrms
Counters
6 (16 Bit, 5~40Hz), Min. Pulse Width : 25ms
Digital Output
Channels 2
Output Type
Open-Collector (NPN) (100mA@30VDC)
Load Voltage
+30 V max
Load Current
100 mA max
Isolated Voltage
3750Vrms
Analog Input
Channels 1
Resolution 12
bit
Input Range/Type
0 ~ 20 mA
2G System
GPRS
Quad-band 850/900/1800/1900 MHz
GPRS multi-slot : class 10/8
GPRS mobile station : class B
GPRS class 10 : Max download speed 85.6 kbps
Compliant to GSM phase 2/2+
-Class 4(2W @ 900 MHz)
GT-540P-3GWA-OEM1 user’s manual, Version 1.0, 2013/03
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