TAG 540 with multiple serial connections

You should be able to use multiple PCs with the 540 and a network switch. Just use the next succeeding IP address on the next PC and so on and so on. Make sure the switch is on a UPS power supply so the whole thing doesn't crash when power fluctuates.

You will need the latest CP540 firmware version B-09, this allows up to four connections by IP.

Earlier versions only support one IP connection.

You should also be able to connect multiple PCs to the same serial connection by splitting the connection. Make sure you are only connecting pins 2 and 5 on one of the PCs so the two PCs don't both try and send data out. The 540 won't know it is sending data to two sources and it can certainly be accepted by multiple PCs. There is plenty of info around here on Pin configurations.
Jenna

Our 540 is working great with Ethernet and serial spliters. Its a great timer that can run a race seperatly or with Splitsecond. Its false signal supression circuits are amazing. FKP had this 540 running 2 laptops prior to new firmware using Ehternet router. It is 1st timer to address the fact that computers don't have serial ports any more. Hope Alge's next Timy has Ethernet out. We are trying to run two couputers off timer A incase we lose one of them. Biggest delay I've witnessed as a TD and Coach is losing computer and having to reload entire race. It has taken longer than if a lift broke.

I had 2 issues recently resolved with 540.
1st was my Ethernet plug to computer was lose and broke.
2nd was when I used a different Ethernet card plug I tried to use the same address I had used befor "51" Even though I had disabled it Ethernet plug address was still assigned to 1st drive and this killed communication with computer. Once I assigned IP address that was different it worked great.