Crestron SIMPL Windows Driver Suite

Section 1: Current Release

Version: 1.1.1
Release Date: October 23, 2026
Download: CoolAutomation_2026_Module_Suite_Demo_Program_v1_1_1_compiled (attached)

Always download the latest version from this article. Files shared in forum posts, email threads, or third-party archives may be outdated.

Section 2: Overview

The CoolAutomation 2026 Crestron SIMPL+ Driver Suite provides direct PRM ASCII control of CoolAutomation HVAC gateways from Crestron SIMPL programs.

Supported devices:

• CoolMaster / CoolMaster Pro
• CoolMasterNet
• CooLinkHub
• CooLinkBridge
• CoolMaster Edge

• CoolPlug

   

Section 3: Included Files

The production ZIP includes:

• Compiled SIMPL Windows demo program
• PDF help file
• Quick-start notes
• Release notes

Section 4: Basic Wiring

Use one CoolAutomation 2026 Manager module per CoolAutomation gateway.

For TCP/IP

Use a standard Crestron TCP/IP Client connected to port 10102.

For RS-232

Set Manager Transport_Mode to RS-232 and wire serial TX/RX directly to Manager TX$ / RX$.

Section 5: CoolMaster Edge Setup

CoolMaster Edge requires the ASCII server to be enabled before TCP port 10102 will accept connections.

Run this command once from a terminal or service tool:

set aserver enable 1

This cannot be performed automatically by the Crestron driver because the Manager module cannot connect until the ASCII server is already enabled.

Section 6: Child Modules

Use child modules as needed:

• Add one CoolAutomation 2026 Zone per HVAC indoor unit UID.
• Add one CoolAutomation 2026 Sensor per GS-SMT-IO point UID.
• Add one CoolAutomation 2026 HOA Zone per GS-SMT-HOA heating zone UID.
• Use CoolAutomation 2026 CoolPlug Helper only for CoolPlug commissioning tasks.

Section 7: Release Notes

1.1.1 - October 23, 2026

### Status
- Install Manager, Zone, Sensor, HOA Zone, and optional CoolPlug Helper from this package together. Older Manager and child builds should not be mixed with 1.1.1.
- Production pin names and order are unchanged.

### Fixed
- **Connection recovery:** A device could stop answering commands even while TCP still showed connected. After five consecutive command timeouts, Manager now reconnects and starts communication again while `Connect` stays high.

- **Queue overflow:** When replies stopped, waiting commands could fill the Manager queue and trigger string overflow errors. The queue now has a size limit, and the poller handles exceptions.

- **Mode and power:** A mode button configured to turn on a Zone could send ON and the mode out of order. One request now sends ON, then the selected mode, then reads the unit state.

- **Setpoint display:** After a setpoint change, an older reply could make the displayed value jump back. Zone and HOA Zone now hold the requested value until the device confirms it. If the command fails or times out, they show the latest actual value.

- **Sensor messages:** Manager now sends complete, separated Sensor messages so the Sensor module can read them reliably.

1.0.5 - October 4, 2026

Production patch release. No pin-order or symbol-name changes. 

Update all five modules together as a matched set

Fixed:

• Manager polling now uses one persistent task, reducing recurring scheduler overhead associated with reported 4-Series handle growth.
• LF-framed messages and buffered, single-owner child parsers prevent lost or corrupted feedback during rapid zone updates.
• Send_ON_With_Mode now queues ON, mode, and refresh together, preventing lost power-on commands.
• Zone and HOA Zone retain the latest commanded setpoint while awaiting confirmation, preventing stale feedback from making the displayed value bounce.

1.0.4 - September 3, 2026

Production patch release. No pin/interface changes.

Fixed:

• Zone manager-bus parser now bounds Mid() string lengths when parsing STATE, NAME, and ZONEERR messages.
• Prevents Zone string-range faults from malformed or shorter-than-expected Manager bus messages.

1.0.3 - August 27, 2026

• Enabled Zone louver/swing controls.
• Enabled Zone filter reset.
• Kept Manager console Trace output gated behind Debug.

1.0.2 - August 27, 2026

• Gated Manager console Trace output behind Debug.

1.0.1 - August 27, 2026

• Suppressed routine automatic empty-line No UID poll noise.
• Corrected Zone and HOA Zone UID documentation.

1.0.0 - August 23, 2026

• First official public production release.

Section 8: Support

For product and driver support, open a CoolAutomation support request:

https://support.coolautomation.com/hc/en-us/requests/new