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Manual Documentation Number: MES1A/MES1B-2106m PN7138-rev001
B&B Electronics Mfg Co Inc – 707 Dayton Rd - PO Box 1040 - Ottawa IL 61350 - Ph 815-433-5100 - Fax 815-433-5104 – www.bb-elec.com
B&B Electronics Ltd – Westlink Commercial Park – Oranmore, Galway, Ireland – Ph +353 91-792444 – Fax +353 91-792445 – www.bb-
europe.com
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Package Checklist
MES1A/B Modbus ASCII/RTU to Modbus TCP Converters are
shipped with the following items included:
9 the MES1A or MES1B module
9 a printed version of this user manual
9 a printed version of the MES1A/B Quick Start Guide
9 a CD-ROM disc with
o Device Installer software
o this manual in pdf format
o a Quick Start guide in pdf format
Indicators, Switches and Connectors
Power LED
The Power LED illuminates (red) immediately on power up
indicating that 10 VDC to 30 VDC power is present on the Power
Supply terminals. (Typically 12 VDC is used.)
Figure 2. LED Indicators on the MES1A