Moxa NPort 5410

Info

Manufacturer	Moxa
Model	NPort 5410
Description	4-port RS232 Serial Device Server
P/N	1201054100200
S/N	aqtNB2700132 (00132)
Website	http://www.moxa.com/product/NPort_5410.htm
Cable/Box
Images

Known issues

These are some of the issues we, at QPS, are aware of. Note that the possible solutions (with the same number) are listed below:

1. Qinsy seems to lose the connection with COM ports that are created by a Moxa N-port
2. When using a UDP driver, sometimes messages are not decoded
3. Timing issue: the MOXA introduces variable latency

QPS PPS adapter

DO NOT use a QPS PPS adapter via a MOXA N-port!!!

Possible solutions

Note that this might not work with your setup, but here you at least have some suggestions that might help.

In case you still encounter problems, please contact QPS Support.

1. Change the output configuration from Real COM to UDP
   • It might also help to set up the ports via the N-port Administrator and not the Web interface.
   • Update the Software/Firmware of the MOXA
   • Use the latest Qinsy version
   • Note that there might not be a Qinsy driver available for your device (only Serial). In that case, let QPS Support know right away.
2. Set a Delimiter in the MOXA
   

   

   
   We saw that if no settings are done in the MOXA, it makes a package for each bite.
   • This results in a lot more data being send over the network.
   • And the UDP drivers in Qinsy can not handle this since they do not buffer the data (i.e. wait until the complete string has arrived).
     • This is because normally the message is in one package.
3. Use the Qinsy UTC drivers (these are drivers which decode the timestamp in the message)
   • If you don't have this option, it might help to set the same baud rate and update rate for all the devices interfaced to the MOXA.
   • If the timing is critical and there is no UTC driver available, do not use a MOXA N-port!
   • Have a look at our 'How-to Timing in Qinsy' document (How-to Articles → 1. Setup → How-to Timing in Qinsy)
4. Switch off FIFO buffers in the MOXA

Test Results

The following table shows the latency (milliseconds) per baud rate using specific settings within the IO card.

Result	Settings	9600	19200	38400	57600	115200	Comment
	FIFO Enabled	45	28	20	17		Latency is variable
	FIFO Disabled	12	12	11	11		Latency is variable

Settings

FIFO Disabled	Port Settings	FIFO Enabled