NAiS FP2, Technical Manual

Page: 113 / 144

8-5
8.2.1
Example of Communication Condition Setting using F159 (MTRN) Instruction
When the following conditions are specified for the COM. 1 port in the slot 0.
Unit No. : K3 : 3
Baud rate : K9 : 115200 bps
Character bit : K1 : 8 bits
Parity : K3 : Even
Stop bit length : K0 : 1 bit
RS/CS : K0 : Invalid
Send wWaiting : K100 : 1 ms
Header STX : K0 : not exist
Terminator : K3 : ETX
Terminator setting time : K0 : Unnecessary
Initialize modem : K0 : No
Explanation of program operation
If R0 is turned on when MCU is in the waiting status for transmission, the above communication
conditions are specified for the COM. 1 port in the slot 0.
Key Point:
•
Specify “22 bytes” for the numb er of bytes of setting data when specifing the communication
conditions.
•
All communicaiton conditions fo r registers should be specified all at once in advance in order to set the
communication conditions.
•
The head of register (DT10 in th e example) specified using F159 (MTRN) instruction is used by the
system. Valid data should be specified from the next address (DT11 in the example).
•
Use the default settings for the conditions which is not needed to be set.
•
Specify the settings for COM. 1 port and COM. 2 port separately.
•
Some conditions cannot be cha nged depending on operating modes.
Reference: <Column of “Settable operation mode” in 8.2 Setting Communication Conditions and
Monitoring>