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King Pigeon Hi-Tech. Co., Ltd.
Ver 1.3
GSM/SMS/GPRS/3G/4G
Cellular IoT Gateway
Modbus RTU Master:
Stands for the RS485 used for Modbus RTU Master.
Modbus RTU Slave:
Stands for the RS485 used for Modbus RTU Slave, and the "Scan rate", "Time
out" and "Slave failure verify time " of Master function will be disable.
Baud Rate:
1200/2400/4800/9600/19200/38400/57600/115200 optional.
Data Bit:
8 bit.
Parity Bit:
None, Even and Odd optional.
Stop Bit:
1 or 2 stop bit optional.
Scan rate:
When RS485 used as Master, the interval time between two polling command.
Time out:
When RS485 used as Master, after sending command to slave, the longest time waiting for
slave data back. If longer than this setting value, will ensure slave no response.
Slave Error ACK time:
When RS485 used as Master, if no response time between Master and Slave
longer than this value, will send SMS to authorize number.
Slave Settings
This page is for adding, revising and deleting the slaves. When used as Modbus RTU master, slave
data mapping can be added to local register. When editing a slave, just select a row and right click
to complete the delete, add, modify parameters, etc.
Note:
When adding a slave, first read the list of slaves that have been mapped to prevent the new
slave covering the added slave device.