Schneider Electric ION8800 사용자 설명서
20
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Step 4: Wire the Communications
ION8800 meters are equipped with one standard optical port. Other
communications ports are available as options.
The Communications module cover plate (found on the back of the meter)
should never be removed unless a communications module is installed in its
place.
communications ports are available as options.
The Communications module cover plate (found on the back of the meter)
should never be removed unless a communications module is installed in its
place.
Infrared Connections (COM1)
Connect an optical probe cable (not included) to communicate between the
meter optical port and a PC serial port.
meter optical port and a PC serial port.
RS-485 Connections (COM2 and COM3)
* Use optional Common wire for improved communications performance.
RS-232 Connections (COM3 optional module)
Interface
IEC 1107 optical port
Location
Front of meter
Data Rate
1,200 – 19,200 bps
Isolation
Optical
Duplex
Half
Ports Available
COM2: optional module or Essailec
COM3: optional module only
COM3: optional module only
Connectors
Captured-wire (+, –, Common*, Shield)
Wire
Shielded 2 or 3-conductor RS-485 cable
Maximum Cable Length
1219 m (4,000 ft) total for entire bus
Data Rate
300 – 57,600 bps
Maximum Devices (per bus)
32
Isolation
Optical
Duplex
Half
5
1
9
6
Null modem cable pinout
Pin 3 - Transmit Data - Pin 2
Pin 2 - Receive Data - Pin 3
Pin 7 - Request to Send- Pin 8
Pin 8 - Clear to Send- Pin 7
Pin 5 - Signal Ground- Pin 5
Pin 6 - Data Set Ready- Pin 4
Pin 4 - Data Terminal Ready-
Pin 6
DTE
(computer)
DTE
(meter)
DB9 Null Modem
Wiring Diagram
Specification
Meter Connected to Computer
Meter Connected to External
Modem
Connector Type
DB9 female end for mating with male connector on the meter
Wire
Null modem RS-232 cable
Straight-through RS-232 cable
Maximum Cable Length
15.2 m (50 ft)
Data Rate
300 – 115,200 bps
Isolation
Optical
Duplex
Full