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Schneider Electric BMXP342020

Schneider BMXP342020 M340 Processor, Transparent Ready Modbu

MPNBMXP342020
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Schneider Electric Modicon M340 processor module, BMXP342020, Transparent Ready Modbus, Internal power supply via rack, 95 mA 24 V DC, IP20.

$549.02 – $1,317.18Ref. price · indicative, final on quote
Schneider Electric BMXP342020 datasheet (PDF)
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Specifications

BMXP342020 key specifications
ParameterValue
Range of productModicon M340 automation platform
Product or component typeProcessor module
Integrated connection typeNon isolated serial link RJ45 character mode asynchronous in baseband, RS232C 2 twisted shielded pairs 0.3...19.2 kbit/s full duplex Non isolated serial link RJ45 character mode asynchronous in baseband, RS485 1 twisted shielded pair 0.3...19.2 kbit/s half duplex Non isolated serial link RJ45, master/slave Modbus, RTU/ASCII asynchronous in baseband, RS232C 1 twisted shielded pair 0.3...19.2 kbit/s half duplex Non isolated serial link RJ45, master/slave Modbus, RTU/ASCII asynchronous in baseband, RS485 1 twisted shielded pair 0.3...19.2 kbit/s half duplex USB port 12 Mbit/s Ethernet TCP/IP RJ45 1 twisted pair 10/100 Mbit/s
Current consumption95 mA 24 V DC
IP degree of protectionIP20
Embedded communication serviceBandwidth management, Ethernet TCP/IP Data Editor, Ethernet TCP/IP Modbus TCP messaging, Ethernet TCP/IP Rack Viewer, Ethernet TCP/IP SNMP network administrator, Ethernet TCP/IP
Communication module processor capacity2 Ethernet communication module 4 AS-Interface module
Relative humidity5...95 % without condensation
StandardsIEC 61131-2 IEC 61010-2-201 UL 61010-2-201 CSA C22.2 No 61010-2-201 IACS E10 EN/IEC 61000-6-5, interface type 1 and type 2 EN/IEC 61850-3, location G
SupplyInternal power supply via rack
ConceptTransparent Ready Modbus
MarkingCE UL CSA RCM EAC UKCA China RoHS WEEE IEC

All specifications

BMXP342020 additional specifications
ParameterValue
CategoryUS1PC3418160
Requests1 K data bytes per request character mode 252 data bytes per RTU request Modbus 504 data bytes per ASCII request Modbus
Bus length0...32.8 ft (0...10 m) serial link non isolated character mode segment 0...32.8 ft (0...10 m) serial link non isolated Modbus segment 0...3280.8 ft (0...1000 m) serial link isolated character mode segment 0...3280.8 ft (0...1000 m) serial link isolated Modbus segment 0...49.2 ft (0...15 m) character mode point-to-point 0...49.2 ft (0...15 m) Modbus point-to-point
Directives2014/35/EU - low voltage directive 2014/30/EU - electromagnetic compatibility 2012/19/EU - WEEE directive
MonitoringDiagnostic counters Modbus Event counters Modbus
Status LED1 LED (Green) activity on Ethernet network (ETH ACT) 1 LED (Green) processor running (RUN) 1 LED (Green) status of Ethernet network (ETH STS) 1 LED (Green) data rate (ETH 100) 1 LED (Red) I/O module fault (I/O) 1 LED (Red) memory card fault (CARD ERR) 1 LED (Red) processor or system fault (ERR) 1 LED (Yellow) activity on Modbus (SER COM)
Port ethernet10BASE-T/100BASE-TX
Number of racks4
System overhead0.13 ms fast task 0.7 ms master task
Control channelsProgrammable loops
Control parameterOne CRC on each frame (RTU) Modbus One LRC on each frame (ASCII) character mode One LRC on each frame (ASCII) Modbus
Number of devices2 point-to-point character mode 2 point-to-point Modbus
Memory descriptionSupplied memory card (BMXRMS008MP) backup of programs, constants, symbols and data Internal RAM 4096 kB Internal RAM 256 kB data Internal RAM 3584 kB program constants and symbols Supplied memory card (BMXRMS008MP) activation of standard web server, class B10
Number of addresses0...248 character mode 0...248 Modbus
Protective treatmentTC
Application structure1 cyclic/periodic master task 1 periodic fast task No auxiliary task 64 event tasks
Maximum tap links length<131.2 ft (40 m) serial link isolated Modbus segment
Default size of object areas1024 %MWi internal words located internal data 256 %KWi constant words located internal data 512 %Mi located internal bits
Maximum size of object areas32634 %Mi located internal bits 32464 %MWi internal words 32760 %KWi constant words
Number of devices per segment0...32character mode) 0...32Modbus)
Number of instructions per6.4 Kinst/ms 65 % Boolean + 35 % fixed arithmetic 8.1 Kinst/ms 100 % Boolean
Execution time per instruction0.12 µs Boolean 0.17 µs double-length words 0.25 µs single-length words 1.16 µs floating points
Analogue i (O processor capacity)256 I/O
Ambient air temperature for operation32...140 °F (0...60 °C)
Number of application specific channel36
Local i (O processor capacity (discrete))1024 I/O

Product details

The Schneider Electric BMXP342020 is a Modicon M340 processor module built around a Transparent Ready Modbus architecture. It draws 95 mA from the rack backplane at 24 V DC — the supply is internal, so no separate power wiring is needed on that front. Rated for 0 to 60 °C ambient, IP20, and carries the full set of global marks: CE, UL, CSA, RCM, EAC, UKCA, China RoHS, WEEE, and IEC 61131-2 compliance.

Modbus serial link and isolation

Non-isolated serial segments top out at 10 m; isolated ones reach 1000 m. If you're chasing intermittent faults on a long Modbus run, check whether the serial link is isolated — the BMXP342020 supports both, but the segment length and noise immunity are completely different animals. The RJ45 is wired for twisted shielded pairs; the shield is the first thing to suspect when the signal drifts. Point-to-point is limited to two devices per link in character mode or Modbus mode. For multidrop, expect up to 32 devices per isolated segment.

Place in the M340 family

The BMXP342020 shares its rack interface and Modbus architecture with the BMXP342020H and BMXP342000 variants. The difference tends to be in memory configuration or pre-loaded application profiles — not in the physical footprint or power draw. If you're evaluating a swap, confirm that the application's memory and task structure (cyclic/periodic master, fast task, event tasks) match what the BMXP342020 provides: 3584 kB of program/constant space plus 256 kB data, and up to 64 event tasks.

Frequently asked questions

What is the supply voltage and power requirement?

The BMXP342020 is powered internally via the rack backplane at 24 V DC and draws 95 mA.

What compliance documentation does the BMXP342020 carry?

It is marked CE, UL, CSA, RCM, EAC, UKCA, China RoHS, WEEE, and IEC, and it complies with IEC 61131-2, UL 61010-2-201, and CSA C22.2 No 61010-2-201.

How does the BMXP342020 compare to the BMXP342020H?

The BMXP342020 and BMXP342020H share the same rack power, Modbus architecture, and physical footprint. The H variant typically differs in memory size or pre-loaded firmware; verify the application's memory and task requirements match before substituting.

MPN
BMXP342020