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Siemens 6GK7243-1JX30-0XE0 — PLC Communication Modules

Siemens 6GK7243-1JX30-0XE0 CP 1243-1 DNP3

MPN6GK7243-1JX30-0XE0

Siemens 6GK7243-1JX30-0XE0 CP 1243-1 communication module, DNP3 for SCADA, single-width S7-1200 compact module.

$702.24Ref. price · indicative, final on quote
Siemens 6GK7243-1JX30-0XE0 datasheet (PDF)
Sourced new & surplus through independent channelsAuthenticity-screened · ESD-safe packingListing updated Aug 2026

Specifications

6GK7243-1JX30-0XE0 — Environmental
ParameterValue
IP protection degreeIP20
Storage temperature range-40 ... +70 °C
Transport temperature range-40 ... +70 °C
6GK7243-1JX30-0XE0 — Mechanical
ParameterValue
Width30 mm
Height110 mm
Depth75 mm

Product details

The 6GK7243-1JX30-0XE0: Operates from -20 to +70 °C when mounted horizontally; derate to +60 °C for vertical install. Storage and transport can handle -40 to +70 °C.

What you need to know before fitting it

NTP? No — this module doesn't handle network time protocol. Time sync comes from the SCADA master via DNP3 or from the PLC's CPU. Firmware update possible remotely. Programming requires STEP 7 Basic or Professional. One RJ45 port at 10/100 Mbit/s. Backplane current budget: max 3 modules per CPU. Power supply draw is zero — powered entirely from the backplane.

Frequently asked questions

What power does it draw from the backplane?

It draws 0.25 A at 5 V DC from the backplane bus, dissipating 1.25 W. This is low enough that no additional cooling is needed in most enclosures.

Does it support NTP?

No. This module does not have NTP capability. Time synchronization should be handled through DNP3 or by the S7-1200 CPU.

Can it be mounted vertically?

Yes, but the ambient operating temperature range is reduced to -20 to +60 °C when vertically mounted, compared to -20 to +70 °C when horizontal.

MPN
6GK7243-1JX30-0XE0