How to Select an Interface Relay for PLC Outputs
A step-by-step guide to matching PLC output type, coil voltage and current, contact rating, and socket style when selecting an interface relay.
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The Siemens 6GK1562-3AA00 CP 5623 is a PCI Express x1 (3.3 V) communications processor for PROFIBUS, supplied with a configuration tool and DP-Base software including a DP-RAM interface, PG protocol, and FDL protocol as a single-installation runtime license, class A. It operates as a DP master for up to 124 devices with a 30,256-byte input and output address range.
DP-Base software and the configuration tool ship with the card, so it operates as a standalone DP master without a separate SOFTNET-PB license, unlike the CP 5612/CP 5622. The 124-device DP master capacity and 30,256-byte I/O range are roughly double the CP 5612/CP 5622 figures, matching it to a production master with more slaves than an engineering PG needs. DPV2 support adds isochronous and slave-to-slave data exchange, which DPV0/DPV1-only cards in this family do not offer. Choose the CP 5624 instead when both a master and a device connection are needed on the same PC.
Standalone PROFIBUS DP master stations running more than 64 slave devices, and applications needing DPV2 isochronous or slave-to-slave communication without additional master software.
| product type designation | CP 5623 Communications processor CP 5623 PCI Express X1 (3. 3 V) for connection to PROFIBUS; including configuration tool and DP-Base software: DP-RAM interface for DP master including PG and FDL protocol, single license for 1 installation, runtime software, class A; operating system support, see SIMATIC NET software. |
|---|---|
| product brand name | SIMATIC NET |
| transfer rate: at the 1st interface / according to PROFIBUS | 9.6 kbit/s ... 12 Mbit/s |
|---|
| number of electrical connections: at the 1st interface / according to PROFIBUS | 1 |
|---|---|
| type of electrical connection: at the 1st interface / according to PROFIBUS | 9-pin Sub-D socket (RS 485) |
| type of electrical connection: of the backplane bus | PCI Express x1 |
| Part number | 6GK1562-3AA00 |
|---|---|
| Type designation | CP 5623 Communications processor CP 5623 PCI Express X1 (3. 3 V) for connection to PROFIBUS; including configuration tool and DP-Base software: DP-RAM interface for DP master including PG and FDL protocol, single license for 1 installation, runtime software, class A; operating system support, see SIMATIC NET software. |
| Brand | Siemens |
| Condition | New, factory sealed |
| Source | Siemens and its authorised distributors |
| Warranty | Manufacturer warranty |
| Lifecycle status | Phase-out announced by the manufacturer |
| EAN | 4019169188609 |
| ETIM class | EC001423 |
| eCl@ss | 27242208 |
| type of voltage / of the supply voltage | DC |
|---|---|
| supply voltage: 1 / from backplane bus | 3.3 V |
| supply voltage: 2 / from backplane bus | 12 V |
| relative symmetrical tolerance / at DC: at 3.3 V | 9% |
| relative symmetrical tolerance / at DC: at 12 V | 8% |
| consumed current: 1 / from backplane bus / at DC / maximum | 0.72 A |
| consumed current: 2 / from backplane bus / at DC / maximum | 0.25 A |
| power loss [W] | 5.4 W |
| ambient temperature: during operation | 5 ... 60 °C |
|---|---|
| ambient temperature: during storage | -20 ... +60 °C |
| ambient temperature: during transport | -20 ... +60 °C |
| relative humidity / at 25 °C / without condensation / during operation / maximum | 85 % |
| protection class IP | IP00 |
| module format | PCI Express x1 (half length) |
|---|---|
| width | 18 mm |
| height | 112 mm |
| depth | 168 mm |
| number of plug-in cards of same design / plug-in / per PC station | 4 |
|---|---|
| number of units / note | FMS-5613 supports up to two CP 5603 / CP 5613 A2 / CP 5614 A2 / CP 5623 / CP 5624 processors |
| software / for open communication / by means of SEND/RECEIVE / required | FDL driver included in scope of delivery of the CP |
|---|---|
| number of possible connections / for open communication / by means of SEND/RECEIVE / maximum | 80 |
| software / for DP master function / required | No |
|---|---|
| service / as DP master: DPV0 | Yes |
| service / as DP master: DPV1 | Yes |
| service / as DP master: DPV2 | Yes |
| number of DP devices / on DP master / operable | 124 |
| data volume: of the address range of the inputs / as DP master / total | 30256 byte |
| data volume: of the address range of the outputs / as DP master / total | 30256 byte |
| data volume: of the address range of the inputs / per DP device | 244 byte |
| data volume: of the address range of the outputs / per DP device | 244 byte |
| data volume: of the address range of the diagnostic data / per DP device | 244 byte |
| software / for DP device function / required | No |
| service / as DP device: DPV0 | Yes |
| service / as DP device: DPV1 | Yes |
| data volume: of the address range of the inputs / as DP device / total | 244 byte |
| data volume: of the address range of the outputs / as DP device / total | 244 byte |
| software / for FMS communication / required | Yes, FMS-5613 |
|---|---|
| number of possible connections / for FMS connection / maximum | 40 |
| software / for S7 communication / required | Yes, HARDNET-PB S7 (S7-5613) |
|---|---|
| number of possible connections / for S7/PG communication / maximum | 50 |
| number of active connections / with multi-protocol mode | 50 |
|---|---|
| number of configurable connections / per PC station | 207 |
| configuration software / required | Included in scope of supply |
|---|
| product function: port diagnostics | Yes |
|---|
| Environmental Product Declaration | Yes |
|---|---|
| global warming potential [CO2 eq]: total | 180.41 kg |
| global warming potential [CO2 eq]: during manufacturing | 33.2 kg |
| global warming potential [CO2 eq]: during operation | 147.15 kg |
| global warming potential [CO2 eq]: after end of life | 0.06 kg |
| Net weight | 0.006 kg |
|---|---|
| Package dimensions | 168 × 18 × 112 mm |
| Country of origin | DE |
| Shipping weight | 0.506 kg |
| Ships from | Türkiye |
| Dispatch | — |
| Stock | On request |
Source: manufacturer data · Last verified: 01 Nov 2026
No documents are on file for this part yet.
Ask us for the datasheetThe rated current of CP 5623 Communications processor CP 5623 PCI Express X1 (3. 3 V) for connection to PROFIBUS; including configuration tool and DP-Base software: DP-RAM interface for DP master including PG and FDL protocol, single license for 1 installation, runtime software, class A; operating system support, see SIMATIC NET software. is 0.72 A.
The tariff (HS) code on file for CP 5623 Communications processor CP 5623 PCI Express X1 (3. 3 V) for connection to PROFIBUS; including configuration tool and DP-Base software: DP-RAM interface for DP master including PG and FDL protocol, single license for 1 installation, runtime software, class A; operating system support, see SIMATIC NET software. is 85176200.
The EAN (GTIN) of CP 5623 Communications processor CP 5623 PCI Express X1 (3. 3 V) for connection to PROFIBUS; including configuration tool and DP-Base software: DP-RAM interface for DP master including PG and FDL protocol, single license for 1 installation, runtime software, class A; operating system support, see SIMATIC NET software. is 4019169188609.
CP 5623 Communications processor CP 5623 PCI Express X1 (3. 3 V) for connection to PROFIBUS; including configuration tool and DP-Base software: DP-RAM interface for DP master including PG and FDL protocol, single license for 1 installation, runtime software, class A; operating system support, see SIMATIC NET software. ships from Türkiye. Shipping calculated at checkout · import duties and taxes paid on arrival.
A step-by-step guide to matching PLC output type, coil voltage and current, contact rating, and socket style when selecting an interface relay.
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