26
Checking Operations Section 2-5
refer to the C200HX, C200HG, C200HE Programmable Controllers Operation
Manual (W322).
• Use the MVN(022) instruction to reverse data for displays that require
positive logic.
• Use the 7SEG(214) instruction in the I/O Unit instructions for dynamic dis-
plays.
Checking I/O Links for
C200H I/O Link Units
Read/Write Areas in the C200H I/O Link Unit are allocated by default to the
words in the PLC that it is mounted to as follows:
Read Area: IR 50 (1 word)
Write Area: IR 350 (1 word)
The C200H I/O Link Unit’s Read/Write Areas are normally linked to the Input/
Output Areas of the Master (the Input/Output Areas occupied by the C200H I/
O Link Unit in the Master Unit) as shown in the following diagram.
Connect the Peripheral Device to the PLC, monitor the changes in current
positions, and check that the links are operating normally.
MOV (21)
353
DM1000
BCD (24)
DM1000
110
NEG
353
DM1000
35315
Rightmost bit of temperature data
35315
25315
Normally ON
Master Unit
Input Area
Output area
C200H I/O Link Unit
Read Area
Write Area
Slave
IR 357
IR 050
IR 350
IR 057
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