SAIA PCD1 Controller Full Series

4.4 Communication and Storage Expansion

Slot A: Supports PCD7.F1105, F1215, F1505, F1805 communication modules (RS-485, RS-232, MP-Bus, etc.).

Slot M1: Supports PCD7.R550M04 (4 MB file system), R560/R562 (BACnet firmware), R580/R582 (LON IP firmware), and PCD7.R610 Micro SD card dock (compatible with PCD7.R-MSD1024).

Parallel running of S-Monitoring and BACnet/LON: Follow the official support page instructions.

4.5 Typical Applications

As a microcontroller or communication gateway (such as converting EnOcean wireless signals to BACnet IP)

Energy consumption data collection, recording, and processing (electricity meters, water meters, gas meters)

Local automation logic inside the distribution box (such as lighting control, radiator control)

Integrate with Building Management System (BMS) through BACnet or LON

General accessories and options

5.1 Labels and EPLAN Macros

Self adhesive labels can be directly printed through the SBC LabelEditor of the PG5 device configurator.

The EPLAN Electric P8 macro can be obtained from the support page or EPLAN data portal for easy engineering planning.

5.2 Backup Battery

Model: 4 507 4817 0 (RENATA CR2032 lithium button battery)

5.3 Pluggable screw terminal block

X0: 11 needles, marked 0... 10 (order number 4 405 5089 0)

X1: 9 needles, marked 11... 19 (order number 4 405 5087 0)

X2:10 needle, marked 20... 29 (order number 4 405 5088 0)

X3:10 needle, marked 30... 39 (order number 4 405 4919 0)

5.4 Shell cover plate

Logo free cover plate (4 104 7759 0) for PCD1.M2xxx, which can be personalized with on-site film application.

Programming and software support

All PCD1 controllers are programmed using the Saia PG5 programming software suite, which supports IEC 61131-3 languages such as Instruction List (IL), Function Block Diagram (FBD), Structured Text (ST), and Sequential Function Diagram (GRAFTEC). The automated server function allows users to create embedded web pages, monitor and modify process variables through a browser. The S-Monitoring function (pre installed on the E-Controller) provides visualization, trend recording, and alerting of energy consumption data.

Summary of System Integration Capability

The PCD1 series achieves extensive system integration through the following methods:

Fieldbus: Modbus RTU（RS‑485）、BACnet MS/TP、LON FTT10、M‑Bus、DALI、Belimo MP‑Bus

Building bus: KNX (via IP or external coupler) EIB

Ethernet protocols: BACnet IP, LON IP, Modbus TCP, HTTP (Web Server) FTP、SNMP、Email

Wireless: EnOcean (via external receiver)

Exclusive: S-Bus (Saia's own bus)

Selection Guide and Precautions

Requires large capacity program storage, file system, and dual Ethernet switch: Choose PCD1.M2160.

Only basic Ethernet connection is required, budget is limited: choose PCD1.M2120.

No Ethernet required, only use RS-485 or USB: choose PCD1.M2020.

Room automation applications require a large number of analog inputs/outputs and dedicated room functions: choose PCD1.M2110R1 (note that there is only one free I/O slot and the W525 module is pre installed).

Energy monitoring, distribution box installation, gateway function: Select PCD1.M0160E0 (no I/O expansion slot, but pre installed with S-Monitoring).

Expand communication interface: Select the PCD7.F1xxx or PCD2.F2xxx module according to the required protocol, and pay attention to the 5V bus current limit (maximum 500 mA).

Expand file system or activate BACnet/LON IP: Use the M1 slot's PCD7.Rxxx flash module.