The dh 485 communication interface module links host computers with the allen bradley rs 485 data highway dh 485. Since the cable systems for the different networks are not alike.
Difference Between A 1747 Cp3 And A Normal Rs 232 Cable
Dh 485 wiring diagram. An allen bradley token passing an allen bradley token passing baseband link for a local area network based on the rs 485 standard. However since dh 485 is merely a protocol its not limited to rs 485 and it works well with products that support communicating dh 485 over rs 232. Dh 485 link data highway 485 link. The examples and diagrams in this manu al are included solely for illustrative. Rs232 to pc with handshaking connects 9 pin serial to 9 pin pc serial port. I am trying to connect to a allen bradley slc 500 which has a dh485 connection rj45.
Rs232 to pc without handshaking connects 9 pin serial to 9 pin pc serial port. Dh 485 is a protocol that was originally only available in the slc 500 family of plcs via rs 485 ports dedicated for that purpose. Phoenix connectors are numbered from left to right looking at the top. Dh 485 network with a micrologix 1000 controller. Highway dh data highway plus dh data highway ii dh ii or data highway 485 dh 485 cable network. We assume that you have a fundamental understanding of electronics and electrical codes.
The wireless device then gets sent to an opc server. This manual explains how to plan and install a dh dh dh ii and dh 485 cable system. Sst cards 5136 sd isa and 5136 sd pci support only the dh network. Figure 11 the dh485 communication interface 1770kf3. Iidata highway 485 cable 1770 um022 a guide to wiring and grounding guidelines industrial automation wiring and grounding guidelines. The module supports the protocol required to act as a node on the dh 485 network freeing the host computer from this task.
I have a wireless serial device that has a 9 pin connector that can accept rs232 or rs485 connections. Station address this is a unique node id 0 77 octal for dh and 0 31 decimal for dh 485 of your device. The slc 501 502 and 503 use dh 485 via their rs485 8 pin rj45 jack which is the same physical connector as ethernet but it wont work if you plug it directly into your computer. This driver supports both the dh and dh 485 network types. What kind of cable or convertor do i need to connect the slc 500 to the wireless device. Additionally the 503 504 and 505 have an rs232 db9 port that may be configured for dh 485 but it will be set to df1 by default and can also be.
However when interconnecting multiple devices rs 485 is used. Each of the allen bradley cards kt ktx ktx d pktx pktx d and pcmkb support both dh and dh 485 networks.
Gallery of Dh 485 Wiring Diagram
