I had been getting occasional lockups presumably of the WizNet ethernet interface (responds to pings, but communication with GEM is not possible - resolved with power cycling), and I want to try a wired rs232 connection to my computer.
To test the connection first, I hooked my FTDI (quite certain it's a genuine one, and confirmed working with other devices) Serial-USB converter to my terminal program. I connected GND > GND, and RX>TX, and TX>RX. COM1 and COM2 were set to 115200 with no flow control. Packet format 0:Disabled (which I assume makes it the same as COM1) Despite doing this, I was unable to see any output, gibberish or otherwise, let alone issue commands to the GEM. I also tried reversing the RX/TX lines with the same result.
Is there anything else I should be checking? The GEM is otherwise running on a polling mode via WizNet ethernet.
Below is the config copy and pasted:
Serial#: (redacted)
COM firmware ver: 4.33
ENG firmware ver: 1.49
RealTime Status: OFF
Packet Send Interval: 10
Pri. Packet Format: 4
Sec. Packet Format: 0
Sys Status: OK Wifi/Ethernet Module: Enabled
GEM Ver: Single Phase Only
PCB Ver: 2
BootLoader Ver: 2
COM1 Flow: OFF
COM2 Flow: OFF
Current Constant: 222
Sys Info: 00100001 OK
Sys Flags: 00000000 OK Keep Alive String:""
COM1 Baud: 115200
COM2 Baud: 115200
Phase Setting: Single Phase
Freq: 60Hz
Hardware Configuration: 136
Ethernet with connector board
COM2 Serial Connection not working
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Re: COM2 Serial Connection not working
What's the idle time set to on the Ethernet module? You can try enabling COM1 Auto Reset if the lockups are constant, this will reboot the Ethernet module at a set interval.
You likely need to wire the USB cable as follows:
GND->GND
Tx->Tx
Rx->Rx
You likely need to wire the USB cable as follows:
GND->GND
Tx->Tx
Rx->Rx
Ben
Brultech Research Inc.
E: ben(at)brultech.com
Brultech Research Inc.
E: ben(at)brultech.com