Publication 1764-UM001A-US-P
4-4
Communication Connections
Using a Modem
You can use modems to connect a personal computer to one MicroLogix 1500
controller (using DF1 Full-Duplex protocol), or to multiple controllers (using DF1
Half-Duplex protocol), or Modbus Slave RTU protocol, as shown in the following
illustration. Do not use DH-485 protocol through modems under any
circumstance. (See Using Modems with MicroLogix 1500 Programmable
Controllers on page E-7 for information on types of modems you can use with the
MicroLogix controllers.)
Isolated Modem Connection
We recommend using an AIC+, catalog number 1761-NET-AIC, as your optical
isolator for Channel 0. See page 4-10 for specific AIC+ cabling information. Using
an AIC+ to isolate the modem is illustrated below:
Modem Cable
(straight-through)
Personal
Computer
Modem
Modem
MicroLogix1500
Controller with
1764-LRP
Processor
Protocol
DF1 Full-Duplex protocol (to 1 controller)
DF1 Half-Duplex Slave protocol (to multiple controllers when a
DF1 Half-Duplex Master is present)
1761-CBL-AM00
or 1761-CBL-HM02
User supplied modem cable
Modem
24V dc
MicroLogix 1500 provides power to the AIC+ or
an external power supply may be used.
MicroLogix 1500 with 1764-LSP
or 1764-LRP processor
Содержание micrologix 1500
Страница 1: ...MicroLogix 1500 Programmable Controllers Bulletin 1764 User Manual AB Spares...
Страница 6: ...Publication 1762 RM001A US P Preface P 4...
Страница 52: ...Publication 1764 UM001A US P 3 16 Wiring Your Controller...
Страница 78: ...Publication 1764 UM001A US P 5 10 Using Trim Pots and the Data Access Tool DAT...
Страница 96: ...Publication 1764 UM001A US P B 6 Replacement Parts...
Страница 102: ...Publication 1764 UM001A US P C 6 Troubleshooting Your System...
Страница 132: ...Publication 1764 UM001A US P F 10 System Loading and Heat Dissipation...
Страница 147: ...AB Spares...
Страница 149: ...AB Spares...