Transcript Arctic Modbus Gateway

Arctic Modbus Gateway
Arctic Modbus Gateway
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GPRS enabled Modbus Gateway
Two-way Modbus conversion
– Master on (IP) network, slaves on serial
– Master on serial, slaves on (IP) network
Complete Modbus protocol support
– Modbus RTU and Modbus ASCII serial protocols
– ModbusTCP, ModbusRTU over TCP, ModbusRTU over UDP,
Modbus ASCII over TCP and Modbus ASCII over UDP network
protocols
Can route traffic on network based on Modbus addressing enabling
intelligent use of network resources
Can generate and filter out gateway exceptions
I/O extension option
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DIN rail mounting option
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Modbus TCP
Modbus TCP
Modbus RTU
Modbus RTU
Case:Water automation
PLC
Level sensor
I/O
ModbusRTU (RS-485)
APN
PLC
ModbusRTU (RS-232)
GPRS
Control room
SCAD
A
ModbusTCP over Ethernet
Viola M2M Gateway
Physical Connections
GPRS Antenna
-FME connector
Power input
-6-26 VDC
RS 1 (RS-232)
-Console
RS 2 (RS-232/422/485)
-Modbus serial data
RS 2 DIP switches
-RS-232 / RS-422 / RS-485
-Full (485) / Half (422) duplex
-Bias on/off
-Termination on/off
Ethernet
-10/100 Base-T
DIP Switches and RS2 pinout
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DIP switches control the operation of RS2
Number
Function
State
Explanation
1
RS-232/RS-485
0=RS-232, 1=RS-485
Selects RS-port operation
2
FULL/HALF
0=full, 1=half
Selects between full-duplex (4-wire) and
half-duplex (2-wire) RS-485 operation
3
BIAS
0=off, 1=on
RS-485 biasing
4
TERMINATION
0=off, 1=on
RS-485 termination
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RS2 pinout (standard male DB-9)
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RS2 operation in RS-232 mode (standard DTE) and in
RS-422/485 mode
Pin
1
2
3
4
5
6
7
8
9
RS-485 FD (4-wire) RS-485 HD (2-wire)
RXD+ (in)
TXD- (out)
TXD/RXD- (out/in)
GND
GND
TXD+ (out)
RXD- (in)
TXD/RDX+ (out/in)
General Modbus settings
Modbus Routing
• Used when Modbus master is on serial side
• Routes defined Modbus addresses to defined IP
addresses
– Reduces GPRS communication costs compared to
broadcasting to all devices
– Maximum 30 routes
Local IO
• It is possible to equip Arctic Modbus Gateway with
internal IO board
– 8 DI, 2 DO
• IO control requires separate Modbus connection