Panasonic FP2 ET-LAN Technical Manual page 142

Note:
This applies when the default allocations are used for the transmission buffers.
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For this example, the ET-LAN unit has been installed in slot 0.
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Internal relay allocation
Classification
Complete signal area
Request signal area
9-22
Device number
R0 to R1F
R40 to R5F
Devices used in program example
R1 Receive complete signal
R2 Transmission complete signal
R3 Transmission error signal
R40 Receive request signal
R42 Transmission request signal