49
Parameter
RS-485 Receive packet monitor
This is a parameter to select the target to be monitored with the RS-485 communication monitor of the
MEXE02
.
Either "All" (entire communication) or "Only own address" can be selected.
Communication ID
This is a parameter to set the address number (slave address). The address number set with the address number setting
switch is applied at the factory setting.
Baudrate
This is a parameter to set the Baudrate (transmission rate) according to the setting of the host controller. If the Baudrate
is inconsistent with the host controller, communication is not established and a communication error occurs.
Communication order
This is a parameter to set the communication order according to the setting of the host controller. If the communication
order is inconsistent with the host controller, communication is not established and a communication error occurs.
z
Setting example
When data "1234 5678h" of 32-bit is stored in the register address 1000h and 1001h, the arrangement changes to the
following according to the setting of the "Communication order" parameter.
Setting of parameters
1000h (even number address) 1001h (odd number address)
Upper Lower Upper Lower
0: Even Address-High Word & Big-Endian 12h 34h 56h 78h
1: Even Address-Low Word & Big-Endian 56h 78h 12h 34h
2: Even Address-High Word & Little-Endian 34h 12h 78h 56h
3: Even Address-Low Word & Little-Endian 78h 56h 34h 12h
Data of RS-485 communication is described according to the order of "0: Even Address-High Word & Big-Endian" on
this manual.
Communication parity
This is a parameter to set the communication parity according to the setting of the host controller. If the communication
parity is inconsistent with the host controller, a parity error occurs.
Communication stop bit
This is a parameter to set the communication stop bit according to the setting of the host controller. If the
communication stop bit is inconsistent with the host controller, a communication error occurs.
RS-485 communication timeout alarm
This is a parameter to set the condition in which the RS-485 communication communication timeout alarm is generated.
If the time set in the parameter has elapsed and yet the communication is not established with the host controller, the
RS-485 communication timeout alarm is generated. When RS-485 communication is performed properly, the monitoring
time when communication has not established is reset (the time is also reset when the alarm is cleared).
The initial value of the "RS-485 communication timeout alarm" parameter is set to "0: Not monitored."
RS-485 communication error alarm
This is a parameter to set the condition in which the RS-485 communication error alarm is generated. If the RS-485
communication error such as mismatched CRC, parity error, or framing error occurs in succession and the number of
occurred errors exceeds the number of times set in the parameter, the RS-485 communication error alarm is generated.
•
When RS-485 communication is performed properly, the number of times of RS-485 communication error occurred
is reset.
•
To set the RS-485 communication error alarm to "Disable," set the value of the parameter to "0."
To Next Page
Loading...
