Internet-ready HMIs
Mitsubishi's E-range human-machine interfaces (HMIs) allow you to send
emails and SMS text messages of events such as alarms or production
reports over an intranet or the Internet. Able to be controlled remotely
by a PC, E-range products contain a Java object and standard Internet
browser, allowing an emulation of the HMI to be displayed on the PC
screen wherever it happens to be in the world. Any local adjustment will
be updated at the PC, a feature that is particularly useful when
undertaking remote diagnostics.
Intranets provided a high level of security and response time, compared
with the Internet, but for those with security high on their list of
priorities, all the features of the internet can be used via telephone
lines or password protected modems on the PSTN for a more secure
environment.