We have two old (1997) Verifone ZON 530 timeclocks that we use for employee punch-in/punch-out with our Infotronics Attendance system. They have been running solidly for 18 years, so management hasn't considered them a priority for replacement.
However, one of them recently began to give odd polling errors, and was transmitting garbled data in it's export. I was able to work out resetting the device, but I cannot find documentation on how to configure it's serial settings. It's currently giving the message 'Terminal Locked', and looking for function codes to program it.
I have almost zero experience with the clocks, and we cannot find documentation anywhere in the plant on the device. I contacted Verifone, who told me that the timeclocks are so old that the documentation for them no longer exists (support-speak for 'I don't want to help you, please upgrade). The owner understands that it's time to upgrade, but in the meantime, I have 140 employees attempting to badge in and out on the same clock, which is making some very unhappy end-users.
Does anyone have any documentation/experience with these that they might be able to share with me?
I've embedded front and rear photos, just in case I mis-identified the timeclock.