Mitsubishi Electronics FX3U Garage Door Opener User Manual


 
456
FX3S/FX3G/FX3GC/FX3U/FX3UC Series
Programming Manual - Basic & Applied Instruction Edition
16 External FX Device – FNC 80 to FNC 89
16.1 FNC 80 – RS / Serial Communication
16.1 FNC 80 – RS / Serial Communication
Outline
This instruction sends and receives data using non-protocol communication by way of a serial port (only ch1) in
accordance with RS-232C or RS-485 provided in the main unit.
1. Instruction format
2. Set data
3. Applicable devices
S: This function is supported only in FX3G/FX3GC/FX3U/FX3UC PLCs.
Explanation of function and operation
1. 16-bit operation (RS)
This instruction sends and receives data in non-protocol communication by way of serial ports in accordance with
RS-232C or RS-485 provided in the main unit.
For detailed explanation, refer to the Data Communication Edition manual.
Operand type Description Data type
Head device of data registers storing data to be sent
16-bit binary or
character string
m Number of bytes of data to be sent [setting range: 0 to 4096] 16-bit binary
Head device of data registers storing received data when receiving is completed
16-bit binary or
character string
n Number of bytes to be received [setting range: 0 to 4096] 16-bit binary
Oper-
and
Type
Bit Devices Word Devices Others
System User Digit Specification System User
Special
Unit
Index
Con-
stant
Real
Number
Charac-
ter String
Pointer
XYMTCSD
.b KnX KnY KnM KnS T C D R
U\G
V Z Modify K H E "
"P
S
m S 
S
n S 
FNC 80
RS
Mnemonic Operation Condition
16-bit Instruction
9 steps RS
Mnemonic Operation Condition
Continuous
Operation
32-bit Instruction
S
1
S
D
S
1
S
S
2
D
FNC 80
RS
mS
Command
input
D
n