Panasonic VF2H Series Construction Manual page 22

RS-232C Control Connection （For VF1H/VF2H/VF2 model）
First monitor
PC
In case of the Digital Link daisy chain connection, no need to connect the RS232C cable.
But, connection limitation is same as the Digital Link daisy chain connection.
RS-232C Control Connection （For LFV8/LFV9 model）
First monitor
PC
RS232C Conversion cable
In case of using extended RS232C cable from PC, please use the RS232C straight cable.
Daisy Chain Connection 5
Second monitor
Straight cable
Second monitor
RS232C Daisy Chain cable
Max：100units
Third or more monitor
Max：100units
Third or more monitor
22