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Device Net - Slave I/O
Slave I/O
Slave I/O is the feature that converts I/O data automatically between the PLC in-
stalled with the master unit and GP unit.
Slave I/O uses a special link method that does not allow a user to access a PLC
directly.
When using Device Net Connection the GP series unit performs like an I/O terminal
(Remote terminal). The GP's LS area will be used as a device which inputs/outputs
data with the host (PLC).
The master (host PLC) unit Output area is allocated to GP's Input area, and the
master's Input area is allocated to GP's Output area. The LS area's Input area is
followed in sequence by the Output area. (See below)
• Only the LS Area's User Area (from LS20 to LS1999) is used for this
Note:
• The System Area (from LS0 to LS19) and Reading Area settings cannot be
• GP will be used as a slave unit.
• Explicit Message Communication is not supported.
• The Contents in System Area are programless.
2
GP LS Area
LS
Input Area
Output Area
communication.
used for PLC communication.
GP-PRO/PBIII for Windows Device/PLC Connection Manual
Master (host unit)
Input Area
Output Area
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