IMAC2B009 V2
Uncontrolled Copy - Refer to Ampcontrol Website for Latest Version
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Ampcontrol Pty Ltd
– ABN 28 000 915 542
iMAC System User Manual
iMAC2B009 V4
– 10/18
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Ethernet Communications Port
The iMAC2 Controller is equipped with a 10/100Mbps RJ45 Ethernet port that supports the Modbus TCP/IP
Protocol and the Network Time Protocol (NTP).
In addition to these protocols, the iMAC2 Controller also provides a webserver for data viewing and
diagnostic functions.
For detailed information regarding the Ethernet communications port, refer to the IMAC2B010 iMAC2
Controller Ethernet Communications Manual.
For detailed information regarding the operation of the iMAC2 Web Interface, refer to the IMAC2B011
iMAC2 Controller Web Interface Manual.
Fieldbus Ports
6.6.1 L1 Fieldbus Port
The L1 fieldbus port is the primary fieldbus port to which the iMAC modules are multi-drop connected.
The iMAC2 Controller is orderable in one of two L1 fieldbus operating voltage options: 18V and 21V. The
18V option must be used for intrinsically safe systems, the 21V option is only recommended for large > 7km
non-intrinsically safe systems.
6.6.2 L2 Fieldbus Port
The L2 fieldbus port is used for networking the iMAC2
Controller to a parent Controller’s L1 fieldbus.
The L2 port is optically isolated.
Memory
The iMAC2 Controller has 32k flash memory for storing application (SLP) software. This memory is retained
when power is removed from the Controller. The Controller has an area of this memory reserved for storing
non-volatile application software variables which are automatically saved and restored each time the
C
ontroller’s power is cycled.
Intrinsically Safe Battery
The iMAC2 Controller contains an internal non-user replaceable intrinsically safe battery for maintaining the
unit’s real time clock functions.
WARNING!
The iMAC2 Controller contains a
non-user replaceable intrinsically
safe battery
.
The controller must be returned to an authorised Ampcontrol service
centre for battery replacement.
The iMAC2 Controller shall be installed in a safe area (which may be inside a flameproof box). However,
Issue 1 of Certificate IECEx ITA 07.0017X allows the iMAC2 Controller, under power withdrawn condition, to
be located in an area that may lose ventilation and be classified as Zone 0. It also provides compliance for
the iMAC2 Controller battery to be used within a flameproof enclosure according to IEC 60079-1:2014
Annex E. Refer to Certificate IECEx ITA 07.0017X Issue 1 for further details.
