FPΣ 13.1 Table of Specifications13 - 92) The transmission speed (baud rate) and transmission formatare specified using the system registers.3) Unit (Station) numbers are specified using the systemregisters. Up to 31 units (stations) can be set, using theswitches on the control unit.4) When connecting a commercially available device that has anRS485 interface, please confirm operation using the actualdevice. In some cases, the number of units (stations),transmission distance, and transmission speed (baud rate)vary depending on the connected device.5) The values for the transmission distance, transmission speed(baud rate), and number of units (stations) should be withinthe values noted in the graph below.Numberof units(stations) 4070990 700 1000 1200Transmission distance (m)For transmissionspeed 115.2k bits/sFor transmissionspeed 57.6k bits/sWhen using a transmission speed of 2,400 bits/s to 38.4k bits/s, you can set up to amaximum of 99 units (stations) and a maximum transmission distance of 1,200 m.PLC link function specification (* Note 1)Item DescriptionCommunication method Token busTransmission method Floating master methodTransmission line Twisted - pair cable or VCTFTransmission distance(Total distance)1,200 m/3,937 ft.Transmission speed(Baud rate)115.2k bits/sNumber of units (stations) Maximum 16 units (* Note 2)PLC link capacity Link relay: 1,024 points, Link register: 128 wordsInterface Conforming to RS485 (connected via the terminal block)Notes1) RS485 type communication cassette is required in order touse the PLC link function.2) Unit (Station) numbers are specified using the switches on thecontrol unit or the system registers.
