MicroLogix 1400 MODBUS TCP/IP to DH+ 1785 PLC-5 or 1747 SLC 5/04

image1If you are in a situation where you have an Allen Bradley MicroLogix 1400 with MODBUS TCP/IP support, and you want it to communicate with the DH+ network devices like Allen  Bradley’s PLC5 and SLC5/04, where the MicroLogix Ethernet port is configured for MODBUS TCP/IP Master so that it can get data from any DH+ Device ( PLC5s and SLC504s), or the other way when the DH+ Nodes or devices like PLC5 or SLC5/04 wants to get data from MicroLogix which it’s Ethernet port is configured in this case for MODBUS TCP/IP Slave, that said not many easy affordable solutions are out there, however Equustek Solutions DL6000-MEDH+ can do it easily, when it is configured as a Slave where the MicroLogix is Ethernet port is configured as a Master.

Here the DL6000-MEDH+ will allow the MicroLogix to communicate with all PLC5s and SLC504s or any Allen Bradley DH+ node connected to the same Data Highway Plus network which the DH+ port of DL6000-MEDH+ is connected to, that is accomplished when the MicroLogix MODBUS connects to the IP address of the DL6000-MEDH+ then by using the DH+ nodes address numbers as MODBUS Slave IDs to address the PLCs and SLC504s.

Also when the DH+ PLC5s or SLC 5/04s are initiating communications and are requesting data from the MicroLogix then the DL6000-MEDH+ Ethernet side will be configured as a Master while the MicroLogix Ethernet port will be configured as a MODBUS TCP/IP Slave.

Here the DL6000-MEDH+ will allow any DH+ device to request data from the MicroLogix.

More details about the DL6000-MEDH+ can be found from the link below.

https://www.equustek.com/dl6000-medhplus-modbus-tcpip-to-allen-bradley-dhplus-networks/

DL6000-MEDH+ as A Master Application Note link below

https://www.equustek.com/wp-content/uploads/2015/06/DL6000-MEDH-Application-note-as-master.pdf

DL6000-MEDH+ as A Salve Application Note link below

https://www.equustek.com/wp-content/uploads/2013/08/DL6000-Application-note-as-MODBUS-Slave.pdf