M-Bus / RS485 Metering Module Series

Series Overview

The wired metering module series covers two interface options — M-Bus and RS485 — on a shared non-magnetic sensing platform. Both use PCB coils to detect a metal target, so metering is unaffected by strong external magnets. M-Bus models comply with EN 13757 and default to CJ/T 188; RS485 models default to Modbus RTU, with CJ/T 188 available as an option.

Key Advantages

• Non-magnetic inductive sensing, immune to external magnets
• M-Bus (EN 13757) or RS485 (Modbus RTU) interfaces
• CJ/T 188 protocol option on both families
• Three PCB formats for different meter mechanisms
• Internal DC 3.6 V or external 5–12 V supply options
• Residential and commercial current profiles

Available Models

M-Bus: V23050-MBUS (teardrop PCB) · V11201-MBUS (narrow PCB) · V20525-MBUS (round PCB)

RS485: V23050-RS485 (teardrop PCB) · V11201-RS485 (narrow PCB) · V20525-RS485 (round PCB)

Protocol Options

• M-Bus: 18–42 V bus, 1.5 mA bus current, EN 13757, CJ/T 188 default
• RS485: ±7 V bus, 5–12 V external or DC 3.6 V internal supply, Modbus RTU default

Applications

• Apartment and commercial meter networks
• Wired AMR / AMI systems
• Two-wire bus and multi-drop installations
• Water and gas meter conversion

Customization & Support

PCB outline, connector, cable, protocol mapping and telegram structure are configured for the selected model and host system. Contact us with your master equipment, bus length and meter count requirements.