BAJ
Member
Sorry, have to vent here.
I've used a number of Digi products over the years with success. We recently installed a number of the Digi ONE IAP for a customer to interface their Modbus TCP power meters to ControlLogix. I found the setup to be very easy and the PLC MSG logic quite simple, they just worked. All these systems had one power meter, very simple.
We just installed another system with multiple power meters and a handful of Modbus 485 transmitters. During checkout we found a bug in their firmware, if you try to send a MSG to a Modbus device that is not present on the network (like someone disconnects local power for maintenance), it locks up the Digi ONE IAP until the device returns and is able to communicate. None of the other devices on the network can communicate, all MSG blocks to the Digi will timeout. Even their debug logging mode (telnet, if I remember correctly) freezes up.
So Digi has made the moronic decision that this type of problem is not a support problem. They refuse to fix (or even investigate) without a purchase order from us to pay them to do so. I spent time making it simple for them (admittedly our system was somewhat complex) by setting up a test system with just the PLC, the Digi, and one Modbus device and was able to reproduced the problem. They sat on that info for a month, but just replied they still refuse to look into the problem. So what they are telling me is that even though this is obviously a firmware problem in their product, which I have made very simple for them to test, they want us to pay them to fix their own faulty product.
Make your own decision, but consider yourself warned. I'm done with Digi. I'll be using products from other suppliers.
I've used a number of Digi products over the years with success. We recently installed a number of the Digi ONE IAP for a customer to interface their Modbus TCP power meters to ControlLogix. I found the setup to be very easy and the PLC MSG logic quite simple, they just worked. All these systems had one power meter, very simple.
We just installed another system with multiple power meters and a handful of Modbus 485 transmitters. During checkout we found a bug in their firmware, if you try to send a MSG to a Modbus device that is not present on the network (like someone disconnects local power for maintenance), it locks up the Digi ONE IAP until the device returns and is able to communicate. None of the other devices on the network can communicate, all MSG blocks to the Digi will timeout. Even their debug logging mode (telnet, if I remember correctly) freezes up.
So Digi has made the moronic decision that this type of problem is not a support problem. They refuse to fix (or even investigate) without a purchase order from us to pay them to do so. I spent time making it simple for them (admittedly our system was somewhat complex) by setting up a test system with just the PLC, the Digi, and one Modbus device and was able to reproduced the problem. They sat on that info for a month, but just replied they still refuse to look into the problem. So what they are telling me is that even though this is obviously a firmware problem in their product, which I have made very simple for them to test, they want us to pay them to fix their own faulty product.
Make your own decision, but consider yourself warned. I'm done with Digi. I'll be using products from other suppliers.