Delta C2000 Series User Manual page 861

Chapter 16 PLC Function ApplicationsC2000
API
MODRW
150
Bit device
X Y M
S1
S2
S3
S
n
 S1: online device address. S2: communications function code. S3: address of
data to read/write. S: register for data to be read/written is stored. N: length of data
to be read/written.
 COM1 must be defined as controlled by the PLC (set Pr.09-31 = -12) before using
this command, and the corresponding communications speed and format must
also be set (set Pr.09-01 and Pr.09-04). S2: communications function code.
Currently only supports the following function code; the remaining function code
cannot be executed.
 After executing this command, M1077, M1078 and M1079 will be immediately
changed to 0.
 As an example, when C2000 must control another converter and PLC, if the
converter has a station number of 10 and the PLC has a station number of 20, see
the following example:
Control slave device converter
Seria
l No.
P
Word device
K H KnX KnY KnM
* *
* *
* *
* *
Function Description
H 02 Input read
H 03 Read word
H 06 Write single word
H 0F Write multiple coils
H 10 Write single word
Example
Reads 4 sets of data comprising the
converter slave device parameters
1
Pr.01-00 to Pr.01-03, and saves the
read data in D0 to D3
Reads 3 sets of data comprising the
converter slave device addresses
2
H2100 to H2102, and saves the read
data in D5 to D7
Writes 3 sets of data comprising the
converter slave device parameters
3
Pr.05-00 to Pr.05-03, and writes the
values as D10 to D12
Writes 2 sets of data comprising the
converter slave device addresses
4
H2000 to H2001, and writes the values
as D15 to D16
MODBUS data read/write
16-bit command (5 STEP)
MODRW
T C D
execution type
*
*
32-bit command
*
－
*
*
Flag signal:
S1
Node
ID
K10
K10
K10
K10
16-100
Continuous MODRW
P
execution type
－ －
M1077 M1078 M1079
MODRW command
S2 S3 S4
Function Addres
Register
code s
H3 H100 D0
H3 H2100 D5
H10 H500 D10
H10 H2000 D15
Pulse
－
n
Leng
th:
K4
K3
K3
K2