The PDS-700 series is a family of Programmable Device Servers, also known as "Serial-to-Ethernet gateway", that are designed for linking RS-232/422/485 devices to an Ethernet network. The user-friendly VxComm Driver/Utility allows users to easily turn the built-in COM ports of the PDS-700 series into standard COM ports on a PC. By virtue of its protocol independence, a small-core OS and high flexibility, the PDS-700 series is able to meet the demands of every network-enabled application.
The PDS-700 series includes a powerful and reliable Xserver programming structure that allows you to design your robust Ethernet applications in one day. The built-in, high-performance MiniOS7 boots the PDS-700 up in just one second and gives you fastest responses.
The PPDS-700-MTCP series features true IEEE 802.3af-compliant (classification, Class 1) Power over Ethernet (PoE) using a standard category 5 Ethernet cable to receive power from a PoE switch like the NS-205PSE. The PPDS-700-MTCP also works as a Modbus TCP to RTU/ASCII gateway that supports most SCADA/HMI communications based on the Modbus/TCP protocol. The PDSM-700 is the PDS-700 with Metal Case (RoHS) and the PPDSM-700-MTCP is the PPDS-700-MTCP with Metal Case (RoHS). Metal Case version includes stronger protection than PDS-700 and PPDS-700-MTCP.
The PDS(M)-721(D) and PPDS(M)-721(D)-MTCP is equipped with 1 RS-232 port, 1 RS-485 port and DI/DO. The removable on-board terminal block connector is designed for easy and robust wiring in industrial situations.
Incorporate Serial Devices in an Ethernet network
"Virtual COM" Extend COM Ports
Virtual COM on Windows NT 4.0, 2000/XP/2003 and Vista32
Powerful Programmable Device Server
Watchdog Timer suitable for use in harsh environments
Power Reverse Polarity Protection
Serial Port +/-4 kV ESD Protection Circuit
Self-Tuner ASIC Controller on the RS-485 Port
5-digit LED Display (for versions with a display)
RoHS Compliant with no Halogen
Built-in High Performance MiniOS7 from ICP DAS
10/100 Base-TX Ethernet, RJ-45 Port (Auto-negotiating, auto MDI/MDI-X, LED indicator)
ODM Service Is Available
Low power consumption
Palm-Sized with multiple Serial Ports
Made from fire retardant materials (UL94-V0 Level)
Supports D/I, Latched D/I and Counter Functions
Open Collector (Sink/NPN)
30 VDC, max.
100 mA, max.
Source (Dry Type), Common Ground
Off Voltage Level
+1 V max.
On Voltage Level
+3.5 ~ +30 V
Max. Count: 16-bit (65535)
Max. Input Frequency: 100 Hz
Min. Pulse Width: 5 ms
80186-80 MHz or compatible
Flash ROM: 512 KB ; Erase unit is one sector (64 KB); 100,000 erase/write cycles
16 KB; Data retention: 40 years; 1,000,000 erase/write cycles.
Built-in Watchdog Timer
RS-232 (TxD, RxD, RTS, CTS, GND)
RS-485 (D2+, D2-, GND)
10/100 Base-TX, RJ-45 port (Auto-negotiating, auto MDI/MDI-X, LED indicator)
COM Port Formats
7, 8: for COM1 and COM2
None, Even, Odd, Mark, Space
1, 2: for COM1 ~ COM2
115200 bps Max.
5-digit 7 Segment
Yes, only for "D" versions
Power Reverse Polarity Protection
Required Supply Voltage
+10 VDC ~ +30 VDC (non-regulated)
PoE or +12 VDC ~ +48 VDC (non-regulated)
PDS(M)-721: 2.0 W PDS(M)-721D: 2.7 W
PPDS(M)-721-MTCP: 2.2 W PPDS(M)-721D-MTCP: 2.9 W
Fire Retardant Materials (UL94-V0 Level)
Dimension (W x H x D)
72 mm x 123 mm x 35 mm (88 mm x 123 mm x 28 mm for "M" versions)
DIN-Rail or Wall mounting
Fire Retardant Plastic (Metal for "M" versions)
-25 ~ +75 °C
-40 ~ +80 °C
5 ~ 90% RH, non-condensing
Programmable Device Server with 1 RS-232 port and 1 RS-485 port (RoHS) Includes One CA-0910 Cable
PDS-721 CR with Metal Case
Programmable Device Server with 1 RS-232 port , 1 RS-485 port and an LED Display (RoHS) Includes One CA-0910 Cable
PDS-721D CR with Metal Case
Programmable Device Server with PoE, Modbus Gateway, 1 RS-232 port and 1 RS-485 port (RoHS) Includes One CA-0910 Cable
PPDSM-721-MTCP CR with Metal Case
Programmable Device Server with PoE, Modbus Gateway, 1 RS-232 port, 1 RS-485 port and an LED Display (RoHS) Includes One CA-0910 Cable
PPDSM-721D-MTCP CR with Metal Case
24 VDC/0.25 A, 6 W Power Supply
24 VDC/1 A, 24 W Power Supply with DIN-Rail Mounting
9-Pin Female D-sub and RS-232 connector cable, 30 cm Cable
9-Pin Female D-sub and 3-wire RS-232 cable, 1 M Cable