Yokogawa Data Acquisition with PID Control CX2000 - Manual (Page 129)

5-19
IM 04L31A01-17E
5
Ladder Communication Protocol
• Reception processing: Receive the data of CH5 to CH8.
X2A
1084 FROMP H2 H0A00 D200 K1
FROMP H2 H0A01 D201 K0Z0
MOVP D200 Z0
Read
request
flag
CPU No.
address
Rx read
end
Data size
Data size
<Send data size of data starting with D201>
First D register
5 th digit and sign
information of CH5
CH5 data
SWAPP D201
SWAPP D202
Y28
<Swap the upper and lower bytes of D201>
<Swap the upper and lower bytes of D202>
SWAPP D203
SWAPP D204
<Swap the upper and lower bytes of D203>
5 th digit and sign
information of CH6
SWAPP D205
<Swap the upper and lower bytes of D205>
<Swap the upper and lower bytes of D204>
<Send the data size to D200>
<Send the data size to Z0>
= K3 C0
Interval
counter
1372
1371
P124
END
CH7 data
5 th digit and sign
information of CH7
CH6 data
5 th digit and sign
information of CH8
SWAPP D206
SWAPP D207
<Swap the upper and lower bytes of D206>
<Swap the upper and lower bytes of D207>
SWAPP D208
SWAPP D209
<Swap the upper and lower bytes of D208>
CH8 data
SWAPP D210
<Swap the upper and lower bytes of D210>
CJ P124
<Jump to P124>
<Swap the upper and lower bytes of D209>
5.5 Communication Program for MELSEC