Multi-Point Mode; Real Time Clock Subsystem; Relay Output And Digital Input Subsystem; Bar Code / Magnetic Stripe / Wiegand / Smart Card - Unitech MR350 MKII Technical Reference Manual

3.4.2. Multi-point mode

Either RS-232 or RS-485 ports can be also used in multi-point mode.
When an RS-485 port is assigned to serve in multi-point mode, up to
32 terminals can be accessed per channel, when the RS-232 port is
selected, the number of accessible terminals is limited by the number
of available RS-232 ports on the host computer. There is also a
multi-point communication protocol built into the MR350MKII for
data communication in multi-point networking.
3.5.

Real time clock subsystem

This subsystem allows the program to set and read the system date and time of the
MR350MKII.
3.6.

Relay output and Digital input subsystem

The MR350MKII supports two contact relay ports and four photocoupler input
ports for digital signal input/output control, where pins #11/12 and pins #13/14 can
also be assigned to the RS-232, and barcode scanner port (see "Terminal Block
Adapter" on page 2-19).
3.7.

Bar code / Magnetic stripe / Wiegand / Smart card

The MR350MKII has two ports for connecting four different interface reader. One
of the two ports, as scanner port, is dedicated to bar code reading via bar code wand,
CCD, laser diode scanner, bar code slot reader, and the terminal supports reading of
Code 39, Code 128, Codabar, Interleaved 2 of 5, UPC and EAN. Please be noted,
the secondary magnetic stripe reader besides the built-in one, is only valid on
connecting to the terminal block adapter.
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NOTE:
The CCD , laser diode scanner and barcode wand are only supported
when connected through the scanner port. If terminal block pins
#13/14 are set to scanner port, only the barcode wand or the slot
reader are supported.
The other port, as build-in reader port, is mainly designed for connecting a card
reader for bar code, magnetic stripe, proximity and smart card reader. The proximity
reader can be magnetic stripe reader(MSR) interface or wiegand interface, it up to
customer' s choice. MR350MKII only can support single track 1, 2 or 3 magnetic
card stripe. These two ports can work at the same time.
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