Rs485/Rs232 Serial Ports - GE Power Quality Meter Series Instruction Manual

4.2 S1 PQM SETUP
]] SETPOINTS
]] S1 PQM SETUP
] PREFERENCES
]
] SETPOINT ACCESS
]
] COM1 RS485
] SERIAL PORT
4
MESSAGE
MESSAGE
] COM2 RS485
] SERIAL PORT
MESSAGE
MESSAGE
] FRONT PANEL RS232
] SERIAL PORT
Figure 4–4: SETPOINTS PAGE 1 – PQM SETUP / COMMUNICATION PORTS
MODBUS COMMUNICATION ADDRESS: Enter a unique address from 1 to 255 for the PQM. The
•
selected address is used for all three serial communication ports. A message sent with address 0 is a
broadcast message to which all PQMs will listen but not respond. Although addresses do not have to be
sequential, no two PQMs can have the same address or there will be conflicts resulting in errors. Gener-
ally, each PQM added to the link will use the next higher address, starting from address 1.
• BAUD RATE: Enter the baud rate for each port: 1200, 2400, 4800, 9600, or 19200 baud. All PQMs and the
computer on the RS485 communication link must run at the same baud rate. The fastest response is
obtained at 19200 baud. Use slower baud rates if noise becomes a problem. The data frame consists of 1
start bit, 8 data bits, 1 stop bit and a programmable parity bit. The BAUD RATE default setting is 9600.
PARITY: Enter the parity for each communication port: EVEN, ODD, or NONE. All PQMs on the RS485 com-
•
munication link and the computer connecting them must have the same parity.
4-6
SETPOINT
]] SETPOINTS
]] S2 SYSTEM SETUP
MESSAGE
MODBUS COMMUNICATION
ADDRESS:
COM1 BAUD RATE:
9600 BAUD
COM1 PARITY: NONE
MESSAGE
COM2 BAUD RATE:
9600 BAUD
COM2 PARITY: NONE
MESSAGE
RS232 BAUD RATE:
9600 BAUD
RS232 PARITY: NONE
PQM Power Quality Meter
4 PROGRAMMING

4.2.4 RS485/RS232 SERIAL PORTS

Range: 1 to 255; Step 1
1
Range: 1200, 2400, 4800,
9600, 19200
Range: NONE, EVEN,
ODD
Range: 1200, 2400, 4800,
9600, 19200
Range: NONE, EVEN,
ODD
Range: 1200, 2400, 4800,
9600, 19200
Range: NONE, EVEN,
ODD
GE Power Management