Lync WQ-UV
SECTION 3: Operation
L- OMM-006_0A
•
1/26/2022
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3.7.
Modbus Communication
Remote communication of the Lync UV control system utilizes Modbus over a RS-485 protocol.
Connect the RJ45 cable into CAT 5 ethernet connection port at the bottom of Lync UV controller
(see section 3.6. to locate the port). In order to connect the control wiring to Building
Management System (BAS), use a RJ45 to terminal block adapter and RS-485 wiring.
3.7.1. Serial Communication Settings
The communications settings required by the RS-485 interface are shown in table below.
Baud Rate
19200 Baud
Parity
Even
Data Bits
8
Stop Bits
1
3.7.2. Supported Function Codes
The MODBUS Server in the Lync UV Controller supports the MODBUS function codes and
requests shown in table below.
Request
Function Code
Base-16
Base-10
Read Holding Registers
0x03
3
Read Input Registers
0x04
4
Write Single Register
0x06
6
Report Server ID
0x11
17
3.7.3. Input Registers
The MODBUS input registers of the Lync UV Controller are used to query information about the
controller and its installed UV lamp. These registers are listed the table below. The input
registers are assigned to one of two logical groupings:
•
Lamp Metadata Static (LMS) - This group contains immutable parameters about a lamp that
is installed in the system. These values are read directly from the lamp’s NFC RFID tag.
•
Controller and Lamp Operational Data (CLOD) - This group contains dynamic information
about the operation of the Lync UV controller and its installed UV lamp.
Address
Register Name
Parameters Revealed
Group
0x0374
LampType
Lamp Type
LMS
0x0375
LampRatedOpTime
Lamp Rated Operating Time
LMS
0x0470
ControllerOpTimeH
Controller Cumulative Operating Time (high word)
CLOD
0x0471
ControllerOpTimeL
Controller Cumulative Operating Time (low word)
CLOD
0x0472
LampOpTimeH
Cumulative Lamp Operating Time (high word)
CLOD
0x0473
LampOpTimeL
Cumulative Lamp Operating Time (low word)
CLOD
0x0475
LampLifeRem
Lamp Life Remaining
CLOD
0x0476
MeasuredUvLevelH
Measured UV Level Absolute (high word)
CLOD