Product Description
The ACM21 is a specialized serial communication interface module within the Yokogawa PLC and machine control family. It provides a dedicated RS-232C communication channel for point-to-point asynchronous data exchange between the controller and peripheral devices. This enables seamless integration of equipment such as analytical instruments, HMIs, and serial printers into a unified automation system.
Designed for continuous industrial operation, the ACM21 supports high-speed data transmission up to 230 Kbps, ensuring fast and reliable transfer of process and diagnostic data. Its compact DIN rail design, low power consumption (<1 W), and wide operating temperature range make it suitable for space-constrained and harsh environments alike.
Technical Specifications
| Parameter | Specification |
|---|---|
| Model Identification | ACM21 |
| Equipment Category | PLC Communication Module |
| Interface Protocol | RS-232C Serial (Asynchronous) |
| Maximum Data Rate | 230 Kbps |
| Power Consumption | < 1 W |
| Operating Temperature | -20°C to +70°C |
| Physical Weight | 0.86 kg |
| Signal Architecture | Shielded point-to-point communication |
| Hardware Origin | Yokogawa Electric Corporation |
Application Context
The ACM21 is commonly used in:
-
Pharmaceutical manufacturing
-
Water treatment facilities
-
Laboratory automation systems
It is ideal for connecting:
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Analytical instruments
-
Serial printers
-
Legacy or non-networked devices
The module provides a direct RS-232C link for tasks such as data logging, device control, and firmware configuration.
FAQ
Does the ACM21 support multi-drop RS-485 networking?
No. The ACM21 is designed for RS-232C, which is a point-to-point protocol. For multi-device networking, a module supporting RS-422 or RS-485 is required.
What is the maximum cable distance at 230 Kbps?
For reliable communication at 230 Kbps, it is recommended to keep cable lengths under 15 meters (50 feet) and use high-quality shielded cables to minimize signal degradation and electromagnetic interference.
| Quick Quotes | Receive price & availability FAST from our dedicated customer service team. |
|---|---|
| Delivery | Expedited, Freight, And International Shipping Available. |
| Condition | 100% New with Original Package |
| Payment | We accept American Express, Discover, MasterCard, PayPal, and Visa. Our site is secured by RapidSSL. |
| Shipping Port | ShangHai, Xiamen |
| Warranty | 12 Months |
| Q: Is Our Pricing Competitive? |
| A: Yes, we collaborate with over 50 countries worldwide. As a top supplier in China, we offer significant discounts based on market trends. |
| Q: What Is the Warranty Period? |
| A: All our new and original products come with a standard one-year warranty. |
| Q: What Payment Methods Do We Accept? |
| A: We require 100% T/T (Telegraphic Transfer) payment before shipping. For items with a lead time, a 30% deposit is needed upfront, and the remaining 70% is due before shipping. If you have a representative in China, you can arrange an RMB transfer through them. |
| Q: What Shipping Methods Do We Use? |
| A: We primarily use FedEx, DHL, UPS, and BRE for shipping. If you have an account with any of these carriers, you can handle shipping directly. We also offer free shipping to China-based freight forwarders. |
| Q: What Is Our Delivery Time? |
| A: Delivery usually takes 1-3 days after receiving the initial payment. For items with a lead time, shipping will occur according to the specified schedule. |
| Q: How Do We Package the Goods? |
| A: We ensure safe packaging with multiple layers of protection. Products are first placed in their original boxes and sealed with labels. A layer of bubble wrap is then added for collision protection during transit. Finally, the items are packed securely in durable boxes. |
| Q: How Can Customers Contact Us and Request a Quote? |
| A: You can reach out to us via email, WhatsApp, WeChat, Skype, or your preferred communication platform. Contact us with your needs, and we'll provide a prompt, customized quote. |
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