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DL8 Series Components Functions
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Specifications Application Examples Demo Site

DL8 Series Specifications (RTU module)


Max. number of built-in I/O modules 16 Max. consumption current of I/O modules is limited to 1.6 A.
Isolation Ethernet to internal bus or internal power or power supply (exc. supply) to RUN contact output *1 to FE
Calendar clock Year (4 digits), month, date, day, hour, minute, second
RUN contact output *1 Photo MOSFET relay (no polarity); OFF at error

*1. RUN contact output is available with the firmware version 1.4.x or later for the DL8-C


Communication Standard IEEE 802.3u
Transmission 10BASE-T, 100BASE-TX
Baud rate 10/100 Mbps (Auto Negotiation function)
Protocol TCP/IP, Modbus/TCP, HTTP, FTP, SMTP, SNTP
Transmission media 10BASE-T (STP, Category 5)
100BASETX (STP, Category 5e)
Max. length of fieldbus segment 100 meters
Ethernet indicator LED DPLX, LNK
IP address (factory setting)


Power input 24 V DC ±10%, 12 W
Internal power 5 V DC, 1.6 A
Excitation supply output 24 V DC ±10%, 7 A Power output current consumption must be
under 7 A.
Operating temperature -10 to +55°C (14 to 131°F)
Operating humidity 30 to 90 %RH (non-condensing)
Atmosphere No corrosive gas or heavy dust
Mounting DIN rail
Weight 190 g (0.42 lb)


Battery Vanadium-lithium secondary battery (undetachable)
Calendar clock accuracy Monthly deviation 2 minutes at 25°C
Battery backup Approx. 2 months
Insulation resistance ≥100 MΩ with 500 V DC
Dielectric strength 1500 V AC @1 minute (between isolated circuits)


CE conformity EMC Directive (2004/108/EC)
EMI EN 61000-6-4: 2007/A1: 2011
EMS EN 61000-6-2: 2005


PC OS Windows Vista, Windows 7 (32 bit/64 bit)
Windows 8.1 (32 bit/64 bit)
Browser Internet Explorer 10, Internet Explorer 11
Firefox 13.0.1 or later
Chrome 26.0.1410.43m or later
Tablet, Smart Phone OS iPad, iPhone (iOS5 or later)
Android terminal (Android4.0 or later)
Browser iOS: Safari
Android: Chrome


IP DHCP client is supported.
Manual setting of IP address, subnet mask, default gateway and DNS server also available.
Modbus/TCP slave Remote supervisory control system via SCADA etc.
Modbus/TCP master I/O expansion with remote I/O, e.g. R3 or R7 series, is available. Measuring points in multiple locations can be handled collectively.
Web server function (Direct) The DL8 can be a web server.
‘Data,’ ‘Trend’ and ‘Event Log’ views are accessible from remote locations.
Web server function (Cloud) The DL8 can be an FTP client, and uploads web files to a cloud server. Users can browse the cloud server. Multiple users can access it at once without extra load at the unit. (only browsing; operation not available)
Analog input 32 points
Discrete input 64 points
Pulse input 32 points
Discrete output 64 points
Analog output 32 points
(firmware version 1.4.x or later)
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