W-M1B111/112

8 / 16 Channels Voltage Input Module

Features

Current Input ±20mA, 4~20mA, 0~20mA
Input Impedance Current: 120 Ω
Sampling Rates 2.5 Samples / Second per Channel
Communication Protocol: Modbus RTU

Introduction

W-M1B111 / W-M1B112, 8 and 16 channels voltage analog input modules with the excellent performance benefits to industrial automation applications. Continuously the rugged features of Wolf I/O series, it’s reliable enough to stand on site where the harsh environments.

Specification

Analog Input

Input Type	Voltage
Voltage Range	±1 V, ±5 V, ±10 V, 0-1 V, 0-5 V, 0-10
Burn-out Detection	4-20 mA
Sampling Rates	2.5 Samples / Second per channel
Resolution	16-bit
Accuracy	± 0.1% FSR
Input Impedance	Voltage: 2 MΩ
Span Drift	± 25 ppm/ºC
Zero Drift	± 6 μV/ºC
Input Voltage Protection	± 36 V
Channel Independent Configuration	Yes

General

Interface	RS-485
Power Consumption	1.6W @ 24 VDC (W-M1B111) 2.8W @ 24 VDC (W-M1B112)
Power Requirement	10 ~ 60 VDC
Watchdog Timer	System (1.6 Second Fixed)
Intra-Module Isolation, Field-to-Logic	2500 VDC

Communication

Protocol	Modbus RTU
Speed	From 1200-115.2k bps
Distance	1.2 km at 9.6 kbps

Environmental

Operating Temp.	-25 ~ 70 ºC
Storage Temp.	-30 ~ 75°C
Operating Humidity	10% to 90% (non-condensing)

Dimension

LED Indicators	PWR, Comm, Program, Status
Weight	65g (Average)
Dimensions	472 x 121 x 120mm

Ordering Information

W-M1B111	8 channels voltage input module
W-M1B112	16 channels voltage input module

Download

Description	Size	Type	Version	Date	Download
Description W-M1B111/112 Datasheet	Size -	Type pdf	Version	Date 2024-07-17	Download Download
Description RS-485 I/O Module Tool	Size -	Type zip	Version V0.192	Date 2025-08-15	Download Download

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