CIP Connection to Micrologix 1500

I wanted to know how many CIP connections can a Micrologic 1500 PLC handle at one time.

Regards,

Fabian Antao

Zero. The ML1500 has only serial ports which, as far as I know, do not use CIP.

I will be using a serial to ethernet connection port.
If this is the case, how many CIP connections can the Micrologix controller handle ?

You will be using an Ethernet to Serial converter. The serial port, last I checked can handle a baud rate of up to 38.4k.

It depends on which device you chose how many CIP connections the interfacing device can use. Tell us more please.

The very common 1761-NET-ENI from Allen-Bradley can support six TCP connections; two outgoing, two incoming, and two either way.

I've never examined whether those TCP connections are also 1:1 with a CIP connection, or if the Net-ENI is always using Unconnected messaging.

In practice, I limit my Net-ENI connections to one HMI and one programming terminal. These devices are notorious for their low TCP connection capacity, and it's easy to accidentally use up TCP connections with RSLinx browsing or other diagnostic functions on the network.