SignalFire Wireless I/O Module Mini User manual

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Interface Manual
Wireless I/O Module Mini
SignalFire Number: WIOM-MINI-IOMIX1-xxxx
The SignalFire Wireless I/O Module Mini can send analog and digital I/O to a SignalFire Gateway or
mirror the digital I/O wirelessly another Wireless I/O Mini Module, acting as a wire replacement.
The SignalFire Wireless I/O Module Mini has the following features:
-1 Analog input (1-5V)
-2 Digital inputs
-2 Relay outputs (2 SPDT)
-Wide range DC power input, 6-36 VDC
-Low power consumption
-DIN rail mount with pluggable screw terminal blocks
-Status LEDs

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Specifications
Dimensions
Power
6-36 VDC (25mA average @12V no relays energized, additional 15mA
max for each energized relay)
Temperature Rating
-40°C to +65°C
Analog Input
0-5V Signal (10V Max)
Digital Inputs
Dry Contact or 30 Volts Max (push-pull), 2kHz maximum frequency
Digital Outputs
2 SPDT’s, max 30 VDC @ 2 Amps, 250 VAC @ 0.25 Amps
Radio Frequency
Compliance
902-928MHz ISM Band, FHSS radio, RP-SMA connector
FCC and IC Certified. Contains FCC ID: W8V-SFTS500, IC: 8373A-SFTS500
Certified for use in Class I, Division 2, Groups A, B, C, D. Temperature
Code T5

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Hazardous Location Certification
The Wireless IO Module is rated Class 1 Division 2 non-incendive.
WARNING: EXPLOSION HAZARD. DO NOT REMOVE OR REPLACE COMPONENTS
UNLESS POWER HAS BEEN DISCONNECTED OR THE AREA IS FREE OF IGNITIBLE
CONCENTRATIONS.
AVERTISSEMENT : RISQUE D'EXPLOSION . NE PAS RETIRER OU REMPLACER LES
COMPOSANTS QUE L’ALIMENTATION EST DÉBRANCHÉ OU ZONE EST LIBRE DE
CONCENTRATIONS IGNITIBLE.
WARNING – EXPLOSION HAZARD Substitution of components may impair
suitability for Class I, Division 2
AVERTISSEMENT - RISQUE D'EXPLOSION. La substitution de composants peut rendre ce
materiel inacceptable pour les emplacements de classe I, division 2
WARNING – EXPLOSION HAZARD Do not disconnect while circuit is live unless area
is known to be nonhazardous
AVERTISSEMENT - RISQUE D'EXPLOSION. Ne débranchez pas lorsque le circuit est en
direct , sauf si la zone est connue pour être nonhazardous
WARNING – The Wireless IO Module must be installed in a suitable enclosure for
intended environment
AVERTISSEMENT - Le module IO sans fil doit être installé dans une enceinte appropriée
pour l'environnement prévu
WARNING – All wiring methods must be in accordance with the NEC
AVERTISSEMENT - Toutes les méthodes de Essorez doivent être en conformité avec la
NEC

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Connections and Components
Power
Power must be provided by the Power Input screw terminals (6-36VDC). The module
power requirements at 12VDC is 25mA average plus 15mA per energized relay channel.
Antenna
The antenna port is standard RP-SMA connector. Connect this port to a suitable 900MHz antenna.
SignalFire can supply a variety of antennas for use with the modules.
Analog Input
The analog input operates as a passive voltage input (1-5V).
Wire the analog voltage to the set of screw terminals. Maximum input voltage is 10 Volts. If the input
is a 4-20mA signal, use a high-precision 250Ω resistor from the analog input terminal to ground to
convert the signal to 1-5V.
 
1-5V Signal
GND
4-20mA Signal
GND
A. Input 1 A. Input 1
Digital Inputs
The digital inputs (2 total) can be dry contact or voltage (must be push-pull and pull to ground, 30
Volts max). Be sure to connect the ground bus from the module to either the ground of the voltage
device or the dry contact.
The digital inputs report their current state, as well as input frequency. The DI pulse counter
increments only when the state changes from 0 to 1. The Instantaneous Frequency registers are the
number of pulses per second within 2 seconds of check-in multiplied by 10. The Average Frequency
registers are the number of pulses per second over the period between two check-ins multiplied by
10. The Counts/Min registers are the total number of pulses per minute between two check-ins
multiplied by 10.

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Digital (Relay) Outputs
There are two relay outputs, both SPDT’s. The relays are rated for the following:
30 VDC @ 2 Amps
125 VAC @ 0.5 Amps
Status LEDs
The Wireless I/O Mini node has a green status LED which blinks indicating the module is running. The
status LED also indicates the signal strength between it and its module pair. In addition, there are
TX/RX LEDs to indicate radio messages to/from the module.
The status LED will blink once a second if it is not connected to another module. If the node is
connected to its paired module, it will blink a link quality code every 3 seconds.
3 Blinks
=
Strong Signal
2 Blinks
=
Good Signal
1 Blink
=
Weak Signal
Each relay output also has a green LED which turns on while the relay is energized.

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Modes of Operation
The Wireless I/O Module Mini can be run in two software settable “system modes”: Node,
and Point-to-Point. The ToolKit has a Radio Mode dropdown that can be set to either
Node or Gateway. For the WIOM Minis to operate in Node mode, all WIOM Minis on the
network must be set to Node and they will communicate with a SignalFire Gateway. For Point-to-
Point, set one WIOM Mini to Gateway and one WIOM Mini to Node, on a network that has no other
devices.
Node Mode
In Node mode, the WIOM Mini will send its analog and digital inputs/outputs to the Gateway. All IO
and then be read/set from a PLC via Modbus.
Node Mode. The Gateway reads all inputs from all nodes, and can control any output of any node as commanded by a PLC

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Point-to-Point Mode
In Point-to-Point mode, a WIOM Mini that is set to Gateway mode will mirror its digital
inputs to the outputs of a Module set to Node, and vice-versa. Point-to-Point mode is
only valid for a pair of WIOM Mini modules. For example, if Digital Input 1 on the Gateway
is shorted to GND (logic 1), Digital Output 1 on the Node is energized, and vice versa.
Because the WIOM Mini A does not have an analog output, the analog input is not used.
Point-to-Point Mode. Inputs from one module are mirrored as outputs on the other
When set to Point-to-Point mode, the WIOM Minis will not be viewable through a SignalFire Gateway
as they will be on their own network. The module that is set to Gateway will be locked to Slave ID 1.
WIOM-Mini to WIOM Mode
A WIOM Mini and a regular WIOM can also operate in Point-to-Point mode with each other. In this
configuration the WIOM will mirror the WIOM Mini A’s analog input to its analog output 1. The DI’s
will be mirrored in both directions. The WIOM must be configured in Gateway mode while the WIOM-
mini must be in node mode.

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Configuration
Using the SignalFire Toolkit
The SignalFire Toolkit application can be downloaded at www.signal-fire.com/customer.
After installation, launch the software and the main toolkit window will open:
Select the COM port associated with the Wireless IO Module Mini and click “Auto-Detect Device on
COM Port.” This will open the device configuration window, where all device settings can be
configured.
Network Settings
The network is set using the SignalFire Toolkit. To join a SignalFire network in Node mode, all Wireless
I/O Module Minis must have the same Radio Network, Radio Network Group, and Corporate
ID/Encryption Key as the Gateway. For two Wireless I/O Module Minis to communicate in Point-to-
Point mode, they must share the same Radio Network, Radio Network Group, and Corporate
ID/Encryption but not share those settings with any other SignalFire network.
To use an Encryption Key in lieu of a Corporate ID, check off the “Enable Encryption” box under the
Corporate ID. The Corporate ID field will switch over to an Encryption Key field.
The encryption key can be hidden so it cannot be read. This is the
most secure option, but if you forget your key, there is no way to recover it –you have to reset the
key on every device on its network. To enable this option, select Set Encryption Key Unrecoverable
under the Settings menu.

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Advanced Settings
Failsafe Operations
In the event of a loss of communication between the node and the gateway, it may be
desirable for the outputs to go to a fail state. This is accomplished by setting one or both
of the failsafe timers.
Communication Failsafe Timer – If the node loses its wireless communications link to the gateway for
greater than this time, any failsafe enabled relay will be put into a non-energized state. The relay will
remain in this “safe” state until a Modbus command is sent from the Modbus master through the
Gateway to energize the coil.
Message Failsafe Timer – This is similar to the previous timer, but this indicates the time since a valid
Modbus coil write message has been sent from the Modbus master through the SignalFire Gateway. If
used, this timeout must be set higher than the Modbus coil write frequency of the Modbus master
device. This option is available for both Point-to-Point and Node mode.
Analog Scaling (Node Mode only)
Analog scaling can be used to scale an analog input to engineering units. For example, for a 0-
1000psi sensor set the scale low to 0 and scale high to 1000. The scaled value will now be displayed in
the Toolkit and reported to the gateway as a floating point number.
Digital Input Debounce
In cases where it is desired to accurately totalize digital input counts it may be necessary to enable the
digital input debounce timer. The debounce timer is useful when dealing with dry contacts that may
otherwise produce extra count when they close. To enable the digital debounce select Digital Input
Debounce from the settings pull-down menu. A typical value for a dry contact would be 100mS. Any
extra counts due to contact bounce within the debounce time setting will be ignored.

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Modbus Register Map
Technical Support and Contact Information
SignalFire Telemetry
140 Locke Dr, Suite B
Marlborough, MA, 01752
[phone]
[e-mail]
Revision History
Register
Address
Register
Number
Description
Function
Code
Register
Type
Coils (0xxxx)
Write-only
101
00102
Relay1 Coil
05
Write Only
102
00103
Relay2 Coil
05
Write Only
111
00112
Counter1 Reset Coil
05
Write Only
112
00113
Counter2 Reset Coil
05
Write Only
Holding Registers (4xxxx)
121
40122
Relay1 Pulse (0 = Off, 1 –65,535 = Pulse Time (sec))
06
Write Only
122
40123
Relay2 Pulse
06
Write Only
1100
41101
AI1: Voltage Reading (Unsigned int, mV)
03, 04
Read Only
1101
41102
DI1: State (Unsigned int, 1 = Closed or 0 = Open)
03, 04
Read Only
1102
41103
DI2: State
03, 04
Read Only
1103
41104
Relay #1 State (Unsigned int, 1 = ON or 0 = OFF)
03, 04
Read Only
1104
41105
Relay #2 State
03, 04
Read Only
1105
41106
AI1: Scaled Reading (Float High Word)
03, 04
Read Only
1106
41107
AI1: Scaled Reading (Float Low, Word)
03, 04
Read Only
1107
41108
DI1: Total Counts (Unsigned int, High Word)
03, 04
Read Only
1108
41109
DI1: Total Counts (Unsigned int, Low Word)
03, 04
Read Only
1109
41110
DI2: Total Counts (Unsigned int, High Word)
03, 04
Read Only
1110
41111
DI2: Total Counts (Unsigned int, Low Word)
03, 04
Read Only
1111
41112
DI1: Average Frequency (Hz x 10)
03, 04
Read Only
1112
41113
DI1: Instantaneous Frequency (Hz x 10)
03, 04
Read Only
1113
41114
DI1: Counts per minute (x 10)
03, 04
Read Only
1114
41115
DI2: Average Frequency (Hz x 10)
03, 04
Read Only
1115
41116
DI2: Instantaneous Frequency (Hz x 10)
03, 04
Read Only
1116
41117
DI1: Counts per minute (x 10)
03, 04
Read Only
Revision
Date
Changes/Updates
1.0
7/25/2019
Initial release
1.1
10/15/2019
Frequency register description
1.2
11/26/2019
Corrected mechanical drawings
1.3
1/16/2020
Corrected part number
1.4
3/5/2020
Minor corrections
1.5
4/24/2020
Added detail on mirror mode