Images/schemes proposed are to be considered as indicative and non-binding

Z-TWS4-RT

Z-TWS4-RT-S

IEC 61131 IIoT Edge Controller, Straton IDE, 2 Eth ports, VPN, built-in I/Os

Z-TWS4-RT is a high-performance multifunction controller that combines PLC functionality with data logging, routing, and remote access via an external modem. It is in fact based on StratON IEC 61131-3 softPLC. Equipped with 2 Fast Ethernet ports (which can be managed in LAN/WAN modes), 3 serial ports, and 1 USB host 2.0 port, Z-TWS4-RT supports ModBUS TCP Server, ModBUS RTU Master/Slave, FTP/SFTP Server, HTTP/HTTPS Server, OpenVPN, SSL, as well as IoT protocols (MQTT, OPC UA, HTTP post) and optional Energy Management protocols (IEC 60870-101, IEC 60870-104, IEC 61850).

The controller has 6 configurable general-purpose digital channels and 2 analog inputs. The device is configurable via Z-NET4 environment, and web server, and programmable in IEC 61131-3 environment. It also makes use of 4 GB Flash memory, 512 MB RAM, and a Micro SD slot up to 32 GB. Integrated into the LET'S telecare and remote control platform, Z-TWS4-RT can support Point-To-Point-Telecontrol or Single LAN Telecontrol connections. The device complies with the most stringent cybersecurity standards starting from compliance to penetration test conducted according to OWASP, NIST 800-115, Risk Analysis, and IEC 62443.

TECHNICAL DATA

Power supply	11..40 Vdc
Max. power consumption	6 W
Max insulation	1.5 kVac
LED status indicators	Power supply Run I/O status VPN status VPN connection RX/TX serial communication Link/Ethernet traffic
Protection class	IP20
Connections	3.5 mm pitch removable terminal block, cable cross-section 1.5 mm² IDC10 power supply/communication bus connector
Flash Memory (data)	≥4 GB
RAM	512 MB
Slot for SD card	Yes Max 32GB
I/O channels	Nr. 6DI/DO configurable Nr. 2AI (mA,V)
Operating temperature	-25..+65 °C
Dimensions (wxhxd)	35 x 102.5 111 mm
Weight	240 g approx.
Case	PA6 glass fibre reinforced
Installation	For 35 mm DIN rail IEC EN 60715
Certifications	CE, UKCA
COMMUNICATION
Ethernet Ports (ETH1, ETH2)	Nr.2 Fast Ethernet 10/100Tx ports (RJ45)
Serial ports	Nr.1 RS232 / RS485 port, max baud rate 115kbps Nr.2 RS485 ports, max baud rate 115kbps
USB ports	Nr.1 USB host port on type A side connector Nr.1 micro USB port for debugging
CAN port	Nr.1 CAN port (terminals)
Serial Protocols	ModBUS TCP-IP Server/Client ModBUS RTU Master/Slave FTP/FTPs Client sFTP Server HTTP/HTTPS server SMTPs client Samba
IoT Protocols	MQTT, MQTTs, OPC UA Server, https, http post
Connectivity	Max Client TCP-IP 50, Max ModBUS RTU/ASCII slave nodes 128 per port, Memory area 2,000 variables (tags)
WORKING MODE
GATEWAY FUNCTIONALITY
ModBUS / Ethernet Serial Gateway + passthrough	x
Gateway shared memory - Gateway with Tag	x
IIoT / Edge / MQTT Gateway	x
ROUTING
LAN router	x
Advanced Router - Nat 1:1 & Static Router	x
ADVANCED FEATURES
Datalogger	x
Telephone alarm unit	x
Remote Access VPN Unit	x
SoftPLC IEC 61131	x
HMI
Widgets and Screens on Virtual HMI	x
Remote Display	x
SECURITY
Authentication	username/pass
Permission management	Supervisor/operator/guest/ftp user
Encryption algorithm (data encryption)	OpenVPN AES-256bit-CBC + Auth SHA256 bit or user selectable
Security protocols	OpenVPN, SSL HTTPS Server MQTT over SSL/TLS TLS 1..2 or higher
SSL/TLS certificates	TLS automated certificate management for HTTPS
Cybersecurity certificates (penetration testing)	Yes, OWASP, NIST 800-115, Risk Analysis, IEC62443
IMPOSTAZIONI
Programming	Web Server Z-NET Straton IDE
Management tool	SDD (Seneca Discovery Device)
VPN/IIoT
VPN Management Software	OpenVPN, VPN Client Communicator
LET'S Support	Yes
SoftPLC
PLC Programming	IEC 61131-3 (Straton)
Nr.max. variables/tag PLC	1000
PLC program size	2,048kB