# AB Micrologix 1500 -\> Pyramid/HMS AB7603 \> Ignition **URL:** \ **Category:** Ignition\ **Created:** [September 3, 2020, 12:25am UTC](https://forum.inductiveautomation.com/t/ab-micrologix-1500-pyramid-hms-ab7603-ignition/38334 "2020-09-03T00:25:57Z")\ **Posts on this page:** 7\ **Page:** 1
**Author:** ![tyler.robertson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/tyler.robertson/32/18299_2.png) [@tyler.robertson](https://forum.inductiveautomation.com/u/tyler.robertson)\ **Post date:** [September 3, 2020, 12:25am UTC](https://forum.inductiveautomation.com/t/ab-micrologix-1500-pyramid-hms-ab7603-ignition/38334/1 "2020-09-03T00:25:57Z")
Hi folks, I’ve got an older DeviceNET system running 24/7 that I’m trying to simply monitor with Ignition. It has an older AB Micrologix 1500 that we’re able to connect to through RSNetworx for Ethernet/IP using a Pyramid Devicenet to Ethernet AB7603 Gateway. Great. I thought I was in the clear. However, I’m having trouble pulling data in Ignition. I can connect to the device with Modbus TCP, but can’t seem to actually read any information other than ‘0’ for an integer. I’ve tried all the usual holding register values. I looked up Modbus addressing in the AB7603 manuals. I either get a 0 for an integer value, or bad tag. > **[AB7603\_Modbus-TCP\_Register\_Mapping\_App\_Note.pdf](https://pyramiddl1.pyramidsolutions.com/unsecured/support-documents-drivers-downloads/AB7603_Modbus-TCP_Register_Mapping_App_Note.pdf)** > > 27.29 KB > **[AB7603\_User\_Manual-10-2016.pdf](https://pyramiddl1.pyramidsolutions.com/unsecured/support-documents-drivers-downloads/AB7603_User_Manual-10-2016.pdf)** > > 2014.53 KB On the Logix side I can get the Micrologix 1200/1400 Driver to connect, but it always connects with PCCC - I’ve tried suggestions from other threads but no luck. If I try to manually map addresses, no bueno. I think I’m doing this correctly (I’m trying both): ex: _ns=1;s=[1980 Spray Robot #1 - Micrologix 1500]\_Meta:B3/B3:0_ or _ns=1;s=[1980 Spray Robot #1 - Micrologix 1500]B3/B3:0_ When using the ‘Logix’ driver, I can get connected, but can’t browse again, and in trying to address directly, I get nothing. I suspect I’m missing something on the AB7603. I added a Powerflex drive in the system to the Input map over RSNetworx but still not reading data - it looks like CIP messaging is the way to go to open up data from one Devicenet device to another… is that possible in Ignition? Any help much appreciated! ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [September 3, 2020, 12:31pm UTC](https://forum.inductiveautomation.com/t/ab-micrologix-1500-pyramid-hms-ab7603-ignition/38334/2 "2020-09-03T12:31:43Z")
Nice device. My [Ethernet/IP module](https://inductiveautomation.com/moduleshowcase/module/automation-professionals-llc-ethernetip-class-1-communications) can be the scanner for that HMS module. It can also generate arbitrary CIP Message requests via scripting to retrieve some of the auxiliary/status information it exposes. Based on the description of the Ethernet/IP-DeviceNet bridge, scripted CIP messaging can probably interact with the MicroLogix via Devicenet, but I have no recent experience with that. ~~I would not expect Ignition’s MicroLogix driver to work through such a connection, but I haven’t looked closely at that.~~ Hmm, actually, probably will, with the right connection path. ---
**Author:** ![tyler.robertson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/tyler.robertson/32/18299_2.png) [@tyler.robertson](https://forum.inductiveautomation.com/u/tyler.robertson)\ **Post date:** [September 3, 2020, 9:12pm UTC](https://forum.inductiveautomation.com/t/ab-micrologix-1500-pyramid-hms-ab7603-ignition/38334/3 "2020-09-03T21:12:19Z")
Was hoping I could do this without integrating something else but that might be an option for me there thanks! ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [September 3, 2020, 9:44pm UTC](https://forum.inductiveautomation.com/t/ab-micrologix-1500-pyramid-hms-ab7603-ignition/38334/4 "2020-09-03T21:44:30Z")
> [@tyler.robertson](#): > > without integrating something else My Ethernet/IP module is software--a third-party add-on to Ignition, not hardware. ---
**Author:** ![Kevin.Herron](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/kevin.herron/32/7259_2.png) [@Kevin.Herron](https://forum.inductiveautomation.com/u/Kevin.Herron)\ **Post date:** [September 3, 2020, 10:00pm UTC](https://forum.inductiveautomation.com/t/ab-micrologix-1500-pyramid-hms-ab7603-ignition/38334/5 "2020-09-03T22:00:54Z")
The syntax would just be `ns=1;s=[1980 Spray Robot #1 - Micrologix 1500]B3:0`, have you tried that (using the MicroLogix driver)? ---
**Author:** ![pturmel](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/pturmel/32/3295_2.png) [@pturmel](https://forum.inductiveautomation.com/u/pturmel)\ **Post date:** [September 3, 2020, 10:29pm UTC](https://forum.inductiveautomation.com/t/ab-micrologix-1500-pyramid-hms-ab7603-ignition/38334/6 "2020-09-03T22:29:55Z")
If you share the EDS file for that device, I can probably figure out the connection path you should try on the MicroLogix driver. ---
**Author:** ![tyler.robertson](https://sea1.discourse-cdn.com/inductiveautomation/user_avatar/forum.inductiveautomation.com/tyler.robertson/32/18299_2.png) [@tyler.robertson](https://forum.inductiveautomation.com/u/tyler.robertson)\ **Post date:** [September 4, 2020, 4:10pm UTC](https://forum.inductiveautomation.com/t/ab-micrologix-1500-pyramid-hms-ab7603-ignition/38334/7 "2020-09-04T16:10:23Z")
yeah have tried that addressing Kevin, thanks for confirming. EDS File is here [https://pyramiddl1.pyramidsolutions.com/unsecured/support-documents-drivers-downloads/AB7603EDSv204.zip](https://pyramiddl1.pyramidsolutions.com/unsecured/support-documents-drivers-downloads/AB7603EDSv204.zip) I didn’t realize you could derive connection path from that, very cool