Measurement Computing IOtech 640 Series - Manual (Page 21)

640 & 650 Series 878893 Connectors, Indicators, and Cables 3-3
DIGITAL I/O: The units include a female DB9 connector for up to 8 Digital I/O lines. The connections
are designated as digital input or output via software. To make use of the Digital I/O feature, eZ-TOMAS
or eZ-NDT must be used. Refer to Chapter 8, Digital I/O and to the applicable software document for
details for additional information.
DB9 – As viewed from the rear panel
EXT POWER: +6 to +16 VDC, 1 amp maximum. Power is typically supplied from a TR-2U power
adapter.
Unit Underside
MAC Address Label: Located on the bottom of the chassis, the Media Access Control (MAC) label
shows the device serial number in barcode and base 10 formats. It also shows the Ethernet address (MAC
Address) which is derived from the serial number in hexadecimal and is needed for 640e and 650e models.
If prompted to enter a serial number in software, use the base 10 number. Conversion to a hexadecimal
number for use in addressing will be automatic.
Note: If your network administrator asks you for a MAC number or MAC Address,
provide the hexadecimal number that is located at the bottom of the label.
Digital I/O
Channel
Numbers