Matt S

I am working on a project to add in a pair of Kinetix 6500 servos (through EN3TR ring network) to an existing L72S PLC installation. I am having issues after discovery of the EN3TR module with getting the two Kinetix modules discovered in the Controller organizer. I have the IP address set for my EN3TR, and both of my Kinetix 6500 servos (using BOOTP-DHCP). Everything is on the right network (192.168.104.1 for the EN3TR, 192.168.104.11 and .12 for the two servo control modules). Most often in the controller organizer you see the module in the rack with the slot number preceding it like this: [10] 1756-EN3TR SNET_Network Below that is the Ethernet branch. Every other Ethernet/IP module I've set up in the past you discover the module again, then anything it's connected to. In RSLinx, I see the IP address of the EN3TR like it should be. I'm probably drawing a blank on what to do next. I've tried to add modules offline, but that's not what I want to do. I've tried to add modules with the L72S Safety locked and Safety Unlocked, seeing if that would be the issue. Thanks in advance.

Just started at a new facility that utilizes some AB ControlLogix PLCs. One area of concern is a remote I/O module (1756-DHRIO/D) that occasionally faults out. I would like to have the PLC look at the status word of the adapter and alarm if the adapter faults again. I've tried using the "Major Fault On Controller If Connection Fails While In Run Mode" under the "Connection" tab of the adapter properties, but that isn't working, as I don't loose communications with the module. The adapter is used to pass I/O from several PowerFlex 700 VFDs controlling different process areas on one of our production lines. The drives don't fault out, so using a logic status word with them wouldn't work either. Any help would be greatly appreciated.

As the title suggests, using MEDOC (I'm assuming), and a MAC-PROG/9-CAB connected to the HMI, is enabling pass through programming to a connected A1S CPU possible? I don't have any older version of MEDOC, only GX-Developer, so I can't replicate the problem remotely. Any help would be greatly appreciated.

Yep, that was what I was looking for. I think I got it using a combination of things...but can't test until I get to the site tomorrow. Here's to the PLC not exploding! Cheers!

Hello all, I'm working on a program now which uses an encoder (100PPR) directly mounted to the shaft of a conveyor for a spray application. I'm using the encoder into the X001 input of an FX1N PLC. I've calculated the number of pulses per inch based on the circumference of the shaft. My question is this: How can I use the pulses being read by the X001 input in other parts of the program, and how would I reset the input in the PLC program after a given condition is met...ie the photoeye input goes off. I'm looking everywhere, including the FX Programming Manual and the MELSEC FX Training Manual. I'm not sure if there is a way I can use this input and move it to a register, and then reset the register or what. Thanks in advance.

Luckily I'm not the one working inside. Crossbow, after looking at the H/W manual (the user had thrown his out) last night, I see exactly what you're talking about. Additionally, he told me the current draw for the solenoids was 19mA each. I looked at the sheet and when I saw 24VDC .19A I told him that it was drawing 190mA each, not 19. Math iz gud... Now to convince him to switch the selectors to inputs rather than breaking the +24VDC input signal to the COM0-COM3 terminals on the PLC.

OK. Simple question, but I don't do much of the wiring for the PLCs I program (actually I don't program too much either). I have four 24VDC outputs (solenoid valves - 190mA current draw each) that I need to power via an external 24VDC power supply. Electrically, how do I get power to the Y000-Y003 output terminals of the PLC. And how do I figure in the COM0-COM3 terminals for the common signal? The end user I'm working with doesn't have any electrical drawings, and it's been a few years since I've had to wire a panel, and it took a bit of work to convince him to get an external power supply after the PLCs +24VDC service supply would cut out after taking more than a 400mA load... He also has a selector switch for each output that he's wired serially on the output side. He wants to use them to keep outputs from turning on. Sounds odd, as I would have taken the +24V signal on one end of the selector and the signal to an input on the PLC. Any help would be greatly appreciated.