Recent content by hanjun941

Ive read the manual, they dont say to terminate the first and last device or the ends of the chain.

I've tried with and without the terminating resistance as well as usb to ethernet, no luck, same problem, I think I've exhausted all my options here.

Abit of additional info, while using 120ohm built in resistors on the SK commanders, always gives me a crc checksum error, no matter how many devices are connected, so at least I know I get a reply. I can't make any sense of this info, as the manual for the commander sk do not mention the method...

Hi I just got all my things and set it up exactly like the above trying values between 2 and 5ms, so I reconnected everything on a cat5 shielded cable, done the shielding and the common mode 0v connections as well as use 100Ohm terminating resistors at both ends, it worked prefectly for awhile...

Hi, thanks for sharing all that information. Appreciate it. On the master side, there is a term called update interval on the software, which I set to 250ms, is this too fast? Also is 20ms silent time on the slave side reasonable? I only read and write at most three 16 bit registers at a time...

Edit: I meant COM port not serial port, also where I'm from I can't get a hold of 120ohm shielded twisted pairs and that on my system, I'm using shielded Cat5 with 120ohm resistors. The VFD manual says that for speeds below 38.2kbauds/s there is no need for termination, does this mean since I'm...