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Connecting to the Mirtone MIR2
Serial data connections are made to the RS232 section of TB6 on the 2-MCM Main Controller Module.
However, the 2-MCM module does not permit SDACT to supervise the cable connection to the MIR2.
Optionally, cable supervision can be achieved with the addition of a Mirtone IOP3A Isolator RS232 card.
Follow the instructions in the MIR2 system manuals to install the IOP3A. Either RS232 output of the
IOP3A may be used. Wire to TB2 when using RS232-1 OUT. Wire to TB3 when using RS232-2 OUT.
Make sure to install jumper JP2 for TB2, or JP3 for TB3, to enable the SUPV pin of the IOP3A.
In this configuration, SDACT cannot
supervise the cable connection. Remove
user jumper J4 to prevent a serial port
trouble condition.
To supervise the cable connection at the
SDACT, install user jumper J4. Remove
jumper J4 to disable cable supervision at the
SDACT.
*
RTS and CTS pin numbers depend on J1 and J2 jumper settings. The factory default is RTS on Pin 7, CTS on Pin 8.
IMPORTANT: The MIR2 baud rate must be 4800 baud.
See Appendix A for information on the SIA event codes and zone numbers used by SDACT when
transmitting MIR2 events.
Local Trouble Annunciation
For on premises annunciation of S/FDACT trouble conditions, connect the S/FDACT Trouble Relay
contacts to the MIR2 panel by means of a Signature Series GSA-CT1 Single Input Module or equivalent.
The GSA-CT1 is an addressable dry-contact monitoring module compatible with the MIR2 Signature
Data Circuit. The GSA-CT1 is mounted in a standard electrical box adjacent to the S/FDACT enclosure.
Connect the S/FDACT Trouble Relay Normally Open contact, terminal 22, to the GSA-CT1 TB2
terminal 8.
Connect the S/FDACT Trouble Relay Common contact, terminal 21, to the GSA-CT1 TB2
terminal 7.
Make sure to install the 47K EOL resistor included with the GSA-CT1.
Wire the GSA-CT1 TB1 terminals into the signature loop according to instructions provided in the
MIR2 installation manual.
The MIR2 loop controller assigns an address to the GSA-CT1 module automatically. Program the
MIR2 panel to download Personality code 3 to the GSA-CT1 module during system configuration.
This sets the module for a N.O. non-latching trouble type application. S/FDACT trouble
conditions will result in a trouble signal at the MIR2 panel.
MIR2 TB6 of 2-MCM
SDACT DB9 Pin
2-MCM TB6 Pin
RD 3 TXD
SG 5 COM
MIR2 TB2/3 of IOP3A
SDACT DB9 Pin
IOP3A TB2/3 Pin
RD 3 3 TXD
SG 5 2 COM
CTS
8 (or 7)
*
1 SUPV