GE PQMII, Instruction Manual

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5–8 PQMII POWER QUALITY METER – INSTRUCTION MANUAL
CHAPTER 5: SETPOINTS
• MODBUS COMMUNICATION ADDRESS : Enter a unique address from 1 to 255. The
selected address is used for all serial communication ports. Address 0 represents a
broadcast message to which all PQMIIs will listen but not respond. Although addresses
do not have to be sequential, no two PQMIIs can have the same address or there will
be conflicts resulting in errors. Generally, each PQMII added to the link uses 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 PQMIIs 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
PQMIIs on the RS485 communication link and the computer connecting them must
have the same parity.
5.2.5 DNP 3.0 Configuration
PATH: SETPOINTS
Ö
S1 PQMII SETUP
ÖØ
DNP 3.0 CONFIGURATION
• DNP PORT : Select the appropriate PQMII port to be used for DNP protocol. The COM2
selection is only available if T1 or T20 option is installed in the PQMII. Each port is
configured as shown in
5.2.4: Serial Ports .
• DNP SLAVE ADDRESS : Enter a unique address from 0 to 255 for this particular PQMII.
The address selected is applied to the PQMII port currently assigned to communicate
using the DNP protocol. Although addresses do not have to be sequential, no two
PQMIIs that are daisy chained together can have the same address or there will be
conflicts resulting in errors. Generally each PQMII added to the link will use the next
higher address.
• DNP TURNAROUND TIME : The turnaround time is useful in applications where the
RS485 converter without RTS or DTR switching is being employed. A typical value for
the delay is 30 ms to allow the transmitter to drop in the RS485 converter.
„
COM2 RS485 [
Z
]
SERIAL PORT
COM2 BAUD RATE:
19200 BAUD
Range: 1200, 2400, 4800, 9600, and
19200 baud
MESSAGE
COM2 PARITY: NONE
Range: None, Even, Odd
„
FRONT PANEL [
Z
]
RS232 SERIAL PORT
RS232 BAUD RATE:
9600 Baud
Range: 1200, 2400, 4800, 9600, and
19200 baud
MESSAGE
RS232 PARITY: None
Range: None, Even, Odd
„
DNP 3.0 [
Z
]
CONFIGURATION
DNP PORT: None
Range: None, COM1, COM2
DNP SLAVE ADDRESS:
0
Range: 0 to 255 in steps of 1
DNP TURNAROUND TIME:
0 ms
Range: 0 to 100 ms in steps of 10
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