iSMA-B-MINI/MIX Modbus User Manual
www.ismacontrolli.com
DMP262en | 1st Issue rev. 8 | 05/2022
page 7 of 107
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1.1 Revision History
Rev.
Date
Description
1.0
28 Aug 2015
First edition
1.1
1 Feb 2016
Information about the capacitive load relay added to the
technical specifications.
Information about load Triac Outputs added to the
technical specifications.
Description of the new MINI module 4x Triac Outputs: 4TO-
H and 4TO-H-IP
MINI - 4I40-H and 4I40-H-IP Module built-in application:
Change of logic in the Time relay mode. Now, the timer
counts from the falling edge (it used to start counting from
the rising edge).
New gateway functionality blocking Send Modbus Error.
Tables with PT1000 and NI1000 updated with more
accurate data with new FW measuring resistance at these
sensors with the accuracy of 0.1 Ω.
1.2
3 Jan 2017
New HVAC functions: Heating and Cooling in 4U4O, based
on output thermostatic control with a setpoint and
differential value setting;
New input mode for 4I4O added: Time Relay NC [ms], Time
Relay NO and NC in seconds, Input Forwarding;
New input mode added for 4U4O: Ordinary IO, Monostable
Relay, Bistable Relay, Time Relay NO and NC [ms], Time
Relay NO and NC in seconds, Input Forwarding, Heating,
Cooling with corresponding BACnet objects and Modbus
registers;
Output for resetting to default added after input mode
change in 4U4O and 4I4O;
Improved BACnet COV Increment now can have values with
the resolution of 0.1;
BACnet COV Increment access (read/write) through USB
added;
Power LED added, flashing when the I/O watchdog is
triggered;
I/O watchdog reset after read/write registers through USB
modified;
Sensors added for detecting short circuit and
disconnection, regardless of filter settings on universal
inputs;
Fixed bug with Stop bits, it was always 1.
1.3
16 May 2017
Hardware Version information on the main tab on the web
page and in the Modbus register added
new action in Modbus register no 0 – enter the bootloader
RS485 biasing control added for MINI IP modules with
hardware version >= 2.0
www page: RS485 Biasing Resistors activating option
(appears only in MINI modules with hardware >= 2.0)
modules names on web page corrected (added -H for all
modules with hand operation switches)
1.4
7 Dec 2017
Firmware Version 6.0 released with BACnet certification
fixed out of service flags in AO, BO and TO