Serial Communications Instructions; Receive - Rxd - Omron C200HX Operation Manual

Serial Communications Instructions

Address
00000 LD
00001 AND
00002 AND NOT
00003 LD
00004 KEEP(11)
00005 LD
00006 @MOV(21)
00007 @MOV(21)
00008 @MOV(21)
00009 @XFER(70)
00010 @SEND(90)
00011 LD
00012 AND
00013 OUT
00014 LD
00015 AND
00016 DIFU(13)
00017 LD
00018 AND
5-27 Serial Communications Instructions
5-27-1 RECEIVE – RXD(––)
Limitations
Description
Instruction Operands
00000
25204
12802
12801
12800
12800
# 000A
DM 0000
# 0000
DM 0001
# 0003
DM 00002
# 0010
000
DM 0002
DM 0010
DM 0020
DM 0000
12800
25203
00200
12800
25204
12801
00001
25204
Ladder Symbols
RXD(––)
D
C
N
D and D+(N÷2)–1 must be in the same data area.
N must be BCD from #0000 to #0256.
When the execution condition is OFF, RXD(––) is not executed. When the
execution condition is ON, RXD(––) reads N bytes of data received at the periph-
eral port, and then writes that data in words D to D+(N÷2)–1. Up to 256 bytes of
data can be read at one time.
If fewer than N bytes are received, the amount received will be read.
Address Instruction
00019 AND NOT
00020 LD
00021 KEEP(11)
00022 LD
00023 AND
00024 AND NOT
00025 XFER(70)
00026 LD
00027 @MOV(21)
00028 @MOV(21)
00029 @MOV(21)
00030 @RECV(98)
00031 LD
00032 AND
00033 OUT
00034 LD
00035 AND
00036 DIFU(13)
@RXD(––)
D
C
N
Section 5-27
Operands
12800
12803
12802
12802
25204
25203
# 0016
000
DM 0030
12802
# 0010
DM 0003
# 0000
DM 0004
# 007E
DM 0005
HR 10
LR 10
DM 0003
12802
25203
00201
12802
25204
12803
Operand Data Areas
D: First destination word
IR, SR, AR, DM, HR, TC, LR
C: Control word
IR, SR, AR, DM, HR, TC, LR, #
N: Number of bytes
IR, SR, AR, DM, HR, TC, LR, #
333