Error Codes Display Function
The LCD display on the Main Unit can not only indicate the I/O status, but also perform error code display function (01~99 or E0~E9). This is a very useful function which allows easy maintenance of a machine.
External Interrupt and High Speed Counter Functions
The Main Unit contains 6 rapid input points [X0~X5) which can be
used as the external interrupt or high speed counter input terminals.
It can be connected with maximally 6 single-phase high-speed
counter input signals or 2 AB-phase rotations encoders.
Handy System Functions
→ With a built-in Flash program memory, no back-up battery required.
→ Main programs, component annotations and program annotations can completely be
loaded to the PLC, which allows easy system maintenance.
→ Plenty instructions (including In-Line Comparisons) has made program writing easy.
→ The password protection function can prevent any unauthorized program upload, thus the
intellectual property right can be protected.
→ With a Real Time Clock card installed, timer and related applications will set off
→ AC power input from AC 85V to 264V (AC power unit only).
Flexible Modular Structure With Multitudinous Models and Modules
→ The Main Unit comes in 10 to 60 I/O points for various needs.
(provide 10, 14, 20, 24, 28. 32, 40 and 6O points)
→ A selection of I/O extension modules in the range of 4X/4Y to 16X/16Y is available to meet
Compact and Ingenious Design, Saves Assembling Space
Advanced Window Based Programming
Software: Ladder Master, Easy to Comprehend and Use
Advanced PDA (Palm OS) Based Screen Creation
Software: NeoTouch, Inaugurate a New Fashion
Various Communication Functions
→ The Main Unit has a built-in RS-232 (CP1) communication port which enables data to be
transferred between the PLC and the computer, HMI or SCADA. Also, through this port,
program editing and data monitoring can be performed remotely via MODEMs.
→ Multiplex communication cards and expansion modules provide RS-232 and RS-485
interfaces. A system can be expanded up to 3
communications ports (CP1~CP3).
→ Through the Computer Link (protocol for VH, VB and M series) or MODBUS slave
communication protocol, VH series PLC can be connected
with a computer, HMI or SCADA to form a local area monitoring network.
→ The VH series PLC has the MODBUS (master) communication function which can be used
to connect to any MODBUS enabled peripherals to access data.
→ The VH series PLC has the Non-Protocol communication function which is applied when
there are no any specific communication protocol can be performed. All the
communication processes are customized and completed by PLC's user program. This
function is useful when connecting with various equipment which cannot be communicated
using the MODBUS communication protocol.