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Single Stack Light Monitoring Module with Ethernet/RS-485/Wi-Fi Interfaces and PoE for AC Stack Lights.(6 AC DI + 1 Relay) (RoHS)


Single Stack Light Monitoring Module with Ethernet/RS-485/Wi-Fi Interfaces and PoE for AC Stack Lights.(6 AC DI + 1 Relay) (RoHS)

  Price:  $319.00  

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  • Able to detect the status of each color segment: ON, OFF, or Flashing
  • 6 channel DC digital input and 1 channel alarm relay output
  • Compatible with IEEE802.11b/g/n standards
  • Support infrastructure and limit-AP modes for wireless networks
  • Status monitoring for user-defi ned combinations of multiple color segments
  • Reports the duration of the previous status
  • Supports Modbus RTU, Modbus TCP and MQTT protocols
  • Includes RS-485/Ethernet communication interfaces
  • Includes redundant power inputs: PoE (IEEE 802.3af, Class 1) and DC input
  • Web-based confi guration interface and fi rmware update via Ethernet
  • Relay output for alarm devices
  • Wide operating temperature range: -25 to +75°C



The main purpose of managing machine status is to reduce the amount of downtime and to reduce production costs. The easiest way to achieve this is by installing an SL-PA6R1-WF intelligent module from ICPDAS, which monitors the output of the machine's indicators without affecting the operation of the equipment, thereby enabling the current operation stage of the machine to be mastered and ensuring timely command of the logistics system support in order to achieve production goals. TheSL-PA6R1-WF is a stack light monitoring module with Wi-Fi, Ethernet, and RS-485 interfaces. It includes 6-channel AC digital input and 1-channel relay output that can be used to monitor the status of the stack light of the MES (Manufacturing Execution System) machine. The module can be used to detect the status of each color segment of the stack light as being either OFF, ON, or fl ashing. In addition to detecting the status of each individual color segment, the status of the combination of multiple color segments can also be defi ned, including the ability to report the duration of the previous status. The SL-PA6R1-WF has WLAN connection which complies with the IEEE802.11b/g/n standards. With the popularity of 802.11 network infrastructure, the SL-P6R1-WF makes an easy way to incorporate wireless connectivity into monitoring and control systems. By integrating the SL-PA6R1-WF module into your system, it is easy to implement stack light status monitoring on an MES via SCADA software to improve machine utilization and throughput. The SL-PA6R1- WF also supports Modbus/TCP and UDP protocols and the network encryption confi guration that offer easy and safe access for users from any time and anywhere.


  • Factory Automation
  • Machine Automation
  • Remote Maintenance
  • Remote Diagnosis
  • Testing Equipment



CPU Module
Watchdog Timer Yes, Module (2.3 seconds), Communication (Programmable)
Security IP filter (whitelist) and Password (web)
Intra-module Isolation 3750 VDC
EMS Protection
EFT (IEC 61000-4-4) ±2 kV for Power
ESD (IEC 61000-4-2) ±4 kV Contact for Each Terminal
±8 kV Air for Random Point
LED Indicators
Status S1: System indicator
E1: PoE indicator (Green)
Link/Act (Yellow)
Antenna: Signal Strength
Built-in Web Server Yes
Digital Input
Able to detect the status
of each color segment: ON, OFF, or Flashing
Transmission Range 50 meters (LOS)
Standard Supported IEEE 802.11 b/g/n
Receive Sensitivity -83 dBm @ 11 Mbps
Output Power 8 dBm @ 11 Mbps
Mode Infrastructure & Limit-AP
Encryption WEP, WPA and WPA2
Antenna 5 dBi (Omni-Directional)
Digital Input
Channels 6
Type Wet Contact (Sink, Source)
Wet Contact, ON Voltage Level 80 VAC ~240 VAC
Wet Contact, OFF Voltage Level 30 VAC Max.
Isolation 3750 VDC
Input Impedance 150 KΩ, 2 W
Overvoltage Protection 300 VAC
Max. Stack Light Flashing Speed 60 kHz
Report Duration of Previous Status Yes, 10 ~ 65500 ms
Status monitoring for user-defined
combinations of multiple color segments
Max. 81 combinations
Relay Output
Channels 1
Type Power Relay, Form A (SPST N.O.)
Contact Rating 5 A @ 250 VAC or 5 A @ 30 VDC
Operate Time 6ms
Release Time 3ms
Electrical Endurance VDE:
5 A @ 250 VAC 30,000 ops (10 ops/minute) at 75°C
5 A @ 30 VDC 70,000 ops (10 ops/minute) at 75°C
5 A @ 250 VAC/30 VDC 6,000 ops
3 A @ 250 VAC/30 VDC 100,000 ops
Mechanical Endurance 20,000,000 ops at no load (300 ops/minute)
Power on Value Yes, Programmable
Safe Value Yes, Programmable
COM Ports
Baud Rate 1200 ~ 115200 bps
Protocol Modbus/RTU(RS-485), Modbus TCP(Ethernet, Wi-Fi) and MQTT(Ethernet)
Ports 10/100 Base-TX, 8-Pin RJ-45 x1 (Auto-negotiating, Auto-MDI/MDIX, LED indicators)
Reverse Polarity Protection Yes
Input Range Terminal Block: +10 ~ +48 VDC
PoE: IEEE 802.3af, Class 1
Consumption PoE: 1.2 W Max.
Non-PoE: 1 W Max.
Dimensions (mm) 33 x 108 x 127 (W x L x H)
Installation DIN-Rail Mounting
Operating Temperature -25 ~ +75°C
Storage Temperature -30 ~ +75°C
Humidity 10 ~ 90% RH, Non-condensing

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