System information

2.6-2
For more information visit: www.eaton.com CA08104001E
February 2009
Power Management Systems & Products
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Sheet 02
for Third-Party Integration
mMINT
050
mMINT
mMINT Module
General Description
The mMINT (Modbus Master INCOM
Network Translator) Module is a
Cutler-Hammer accessory product that
will provide communication between a
Modbus RTU network and an INCOM
(INdustrial COMmunications) network
(see Figure 2.6-3). This module is
transparent to the Modbus network.
It communicates to a master on the
Modbus network using the Modbus
RTU (Remote Terminal Unit) protocol.
It communicates to slave devices on
the INCOM network using the IMPACC
(Integrated Monitoring, Protection,
and Control Communication) proto-
col. The catalog number of this
product is mMINT.
Features
The mMINT module is a slave
device on the Modbus network and
as such requires a master that will
exchange register objects with the
mMINT module.
■ Handles generic pass-through com-
mands (Modbus/INCOM/Modbus).
■ Capable of passing Modbus regis-
ter objects from Cutler-Hammer
existing products and newer PnP
(Plug-‘n-Play) products to a Modbus
RTU master.
■ Data in IEEE Floating Point format
and fixed point.
■ Modbus RTU communications
data transfer rates of 1200, 9600
or 19200 baud with 1 start bit, 8 data
bits, no parity and either one or
two stop bits.
■ Up to 32 products connected to
INCOM network port (246 unique
addresses maximum).
■ Flashing Status LED to indicate an
active module.
■ LED indicators for INCOM transmit
and receive communications
exchanges.
■ LED indicators for Modbus RS-485
transmit and receive communica-
tions exchanges.
■ Input power for the module from
either 120 Vac or 24 to 125 Vdc.
■ DIN-rail mount package.
■ 0ºC to 60ºC ambient operation.
Module Mounting
When mounting the mMINT, verify
that an 11 mm H x 28 mm W DIN rail
is used and that it is within an
enclosed space.
Simplified Wiring Rules
INCOM Network
The following simplified rules apply
to a given system consisting of a
single daisy-chained main cable link
between master and slave devices
(see Figure 2.6-3). For more complex
considerations including star configu-
rations, please refer to the IMPACC
wiring specification T.D. 17513.
Figure 2.6-3. mMINT in a Communications
Network
■ Recommended INCOM cable styles
are Belden 9463 or C-H style
2A957805G01.
■ The maximum system capacity is
10,000 feet of communications cable
and 32 slave devices on the INCOM
network under the mMINT.
■ Non-terminated taps, up to 200 feet in
length, off the main link are permitted,
but add to the total cable length.
■ Make sure that there is twisted-pair
wire that is recommended for
IMPACC network use. Use shielded
twisted-pair wire to connect each
slave to the INCOM network,
daisy-chain style. The polarity of
the twisted pair is not important.
Modbus RS-485 Network
The following simplified rules apply to
a given system consisting of a cable
link between master and slave devices
(see Figure 2.6-4). For more complex
configurations, please refer to stan-
dard Modbus RTU wiring specification
rules for the RS-485 network.
■ The recommended Modbus cable
has twisted-pair wires (24 AWG
stranded 7x32 conductors with PVC
insulation) having an aluminum/
mylar foil shield with drain wire.
■ The maximum system capacity
is 4,000 feet of communications
cable and 247 devices on the
Modbus RTU network.
■ Make sure that there is twisted-
pair wire that is recommended
for Modbus RTU network use.
Use shielded twisted-pair wire to
connect each slave to the Modbus
RTU network, daisy-chain style.
The polarity of the twisted pair is
critically important.
Figure 2.6-4. mMINT Module Dimensions
Burden
■ 24 Vac/dc 3 VA
Safety Standards
■ UL
■ CSA
■ CE mark
Communications Speed
■ INCOM: 1200, 9600 Baud
■ N2 Bus: 9600 Baud
Note: Contact Eaton for availability and
support for the N2 Gateway.
Modbus RTU Serial Network
(Slave)
Modbus
mMINT
(Master)
Modbus
Master
INCOM Network
INCOM
Slaves
J1
J2
J3
4.25
(108.0)
RS-485
Modbus
3.54
(89.9)
24 – 125 Vdc
120 Vac
Shield INCOM
A B COM SHD