GCAN GC-4642 User manual

GC-4642
2-channel analog output module(0mA~20mA)
User manual
Document version: V3.01 (2020/12/21)

Vhandy Technology GC-4642 user manual
Contents
1. Function Introduction .............................................................................................4
1.1 Functional Overview ....................................................................................4
1.2 Performance characteristics ......................................................................... 4
1.2 Typical applications ..................................................................................... 4
2. Equipment installation and use .............................................................................. 5
2.1 Module fixing ...............................................................................................5
2.2 Wiringmethod .............................................................................................. 5
2.3 System status indicator .................................................................................7
2.4 Use in combination with PLC400/510 series ...............................................7
2.5 Combination with GCAN-IO-8000 series equipment ..................................8
3. Technical specifications ......................................................................................... 9
4. Disclaimer ............................................................................................................ 10
5. Module selection table ......................................................................................... 11
Sales and service ...................................................................................................... 13

Vhandy Technology GC-4642 user manual
1. Function Introduction
1.1 Functional Overview
GC-4642 (2-channel analog output module, 0-20mA) can be used to output
signals in the range of 0-20mA. This terminal module can provide electrical
isolation signals with a resolution of 16 bits for the processing layer. The GC-
4642 module has 2 two-wire output terminals, which are especially suitable for
installation in a control cabinet to save space. The GC-4642 module has a
common ground potential terminal, and the power contacts are connected
together. The reference ground of the output terminal is the 0V power contact.
1.2 Performance characteristics
●The number of output points is 2;
●The signal voltage is 0mA~20mA;
●Powered by external 24V;
●The load is greater than 5kΩ (short circuit protection);
●Measurement error is less than ±0.1% (full scale) ;
●The measurement resolution is 16 bits;
●Conversion time is about 4ms;
●The electrical isolation is 1500 Vrms;
●The current consumption is about 150mA;
●The bit width output in the process image is 2x 2 bytes;
●Configuration without address setting, through bus coupler or controller
configuration;
●Applicable to all GCAN-PLC-400 series and GCAN-8000 series bus
terminal modules;
●Working temperature range: -40℃~+85℃;
●Dimensions: length 100mm * width 69mm * height 12mm.
1.2 Typical applications
●Standard analog signals can be output externally according to instructions;
●It can be used to adjust the opening of control equipment such as valves and
gates;
●Connect to the bus coupler or controller to realize the transmission of analog
signals.

Vhandy Technology GC-4642 user manual
2. Equipment installation and use
This chapter will explain in detail the installation method, wiring method, the
meaning of the indicator light and the meaning of the interface of GC-4642
module.
2.1 Module fixing
The installation method of the GC-4642 module is shown in Figure 2.1. You
need to use a flat-blade screwdriver for auxiliary installation.
Figure 2.1 GC-4642 module installation
First, you need to install the fieldbus coupler on the rail, and then attach the
GC-4642 module to the right of the fieldbus coupler or other modules to add
this component. As shown in Figure 2.1, insert the GC-4642 module inwards
along the slot until the latch snaps.
The GC-4642 module is powered by GC-bus, no additional power supply is
required. You only need to connect the power supply to the bus coupler and
connect the GC-4642 to the module composed of the bus coupler to realize the
power supply of the GC-4642.
2.2 Wiringmethod
As shown in Figure 2.2, use a flat-blade screwdriver to insert it into the square
hole and hold the screw in the square hole. Then insert the cable into the
circular hole. After plugging in, pull out the screwdriver, and the cable can be

Vhandy Technology GC-4642 user manual
firmly locked in the circular hole.
Figure 2.2 GC-4642 module installation
Figure 2.3 GC-4642 module terminal block
The terminal block of GC-4642 module is shown in Figure 2.3. GC-4642
contains 2 sets of output points, and can connect up to 2 sets of analog signals.
The serial numbers corresponding to the terminals and their meanings are
shown in Table 2.1.

Vhandy Technology GC-4642 user manual
Terminal
Serial number
meaning
Output1
1
Group 1 signal voltage output
GND1
2
Group 1 signal reference ground
Output2
3
Group 2 signal voltage output
GND2
4
Group 2 signal reference ground
Table 2.1 GC-4642 module indicator
2.3 System status indicator
The GC-4642 module has 4 operating indicators to indicate the operating status
of the device. The specific indication function of the indicator light is shown in
Table 2.2. When the indicator is on, the GC-4642 module status is shown in
Table 2.3.
Indicator light
Colour
Indication status
RUN
green
Operating instructions
Table 2.2 GC-4642 module indicator
When the output signal of the GC-4642 module is activated, the operation
indicator will light up.
Indicator light
Status
Indication status
RUN
Always on
Output signal activation
not bright
Output signal is not activated
Table 2.3 GC-4642 module indicator status
2.4 Use in combination with PLC400/510 series
GCAN-PLC-400/510 supports programming in five languages. The following
takes ST language as an example to introduce how to use GCAN-PLC-400 to
program and write the status of the analog output of the GC-4642 module.
When the GC-4642 module performs ST programming definition, it is
necessary to define the variable type, output signal position, start character,
separator, etc. For example: "AO AT%Q0.0:INT;", where "0.0" represents the
start address of the first channel, each channel occupies 2 bytes, 0~20mA
corresponds to 0~65535, so the start address of the second channel The starting
address is Q2.0. When the user uses more than one GC-4642 module, the
second GC-4642 needs to be defined from "Q4.0", because each 4642 has 2
channels; "%" (percent sign) is the direct variable start symbol : ":" (semicolon)
is a variable or type separator. Use symbolic variable AO to write unsigned

Vhandy Technology GC-4642 user manual
integer from %Q0.0 address. AT stands for the address of variable access and
the additional attributes of the variable (see page 46 of the e-book for details).
(Note: Input only affects input, output only affects output, output and input do
not affect each other. That is, if there is and only an input module in front of
the output module, then no matter how many input modules are in front, the
address of the first output module is still Q0 .0.)
2.5 Combination with GCAN-IO-8000 series equipment
The status of the analog output is represented by two bytes. For example:
GCAN-IO-8000 module node number is 1, if you want channel 1 of the first
GC-4642 module to output 10mA, and other channels output 0mA, you need to
write CAN data to GCAN-IO-8000 module The frame ID is 0x201, the data
length (DLC) is 8, and the frame data is 0xFF, 0x7F, 0x00, 0x00, 0x00, 0x00,
0x00, 0x00 data.

Vhandy Technology GC-4642 user manual
3. Technical specifications
Interface characteristics
Output points
2
Signal voltage
0mA~20mA
load
＞5kΩ(Short circuit protection)
power supply
Powered by external 24V
Resolution
16 bits
Conversion time
4ms
Measurement error
＜±0.1% (full scale)
ESD rating
7 kV
Electrical isolation
2500 Vrms
Current consumption
150mA
Bit width in process image
Output: 2 x2 bytes
configuration
No address setting, configuration via bus
coupler or controller
Pluggable wiring
Suitable for all GCAN-PLC-400 series,
GCAN-8000 series bus terminal modules
Environmental test
Operating temperature
-40℃~+85℃
Working humidity
95%RH, no condensation
EMC test
EN 55024:2011-09
EN 55022:2011-12
Anti-vibration/impact
resistance
EN 60068-2-6/EN 60068-2-27/29
Anti-electromagnetic
interference/anti-electromagn
etic radiation performance
EN 61000-6-2 /EN 61000-6-4
Protection class
IP 20
Basic Information
Dimensions
100mm *69mm *12mm
weight
50g

Vhandy Technology GC-4642 user manual
4. Disclaimer
Thank you for purchasing GCAN's GCAN series of hardware and software
products. GCAN is a registered trademark of Shenyang Vhandy Technology
Co., Ltd. This product and manual are copyrighted by Vhandy Technology.
Without permission, it is not allowed to reproduce in any form. Before using,
please read this statement carefully. Once used, it is deemed to be an
endorsement and acceptance of the entire content of this statement. Please
strictly abide by the manual, product description and related laws, regulations,
policies and guidelines to install and use the product. In the process of using
the product, the user promises to be responsible for his actions and all
consequences arising therefrom. Vhandy Technology will not be liable for any
losses caused by improper use, installation, or modification by users.
The final interpretation right of the disclaimer belongs to Vhandy Technology

Vhandy Technology GC-4642 user manual
5. Module selection table
GCAN-PLC-400 series products consist of a programmable main control
module, several GC series IO modules and a terminal resistance module.
GC series IO modules currently include five categories: digital input, digital
output, analog input, analog output, and communication extension. The specific
selection table is shown in Table 5.1.
I/O
Type
Characteristic
Signal
Channel
PLC Control
module
GCAN-PLC-400
CPU:168M
-
-
GCAN-PLC-510
CPU:400M
-
-
GCAN-PLC-511
CPU:400M (2CAN)
-
-
Digital
input
GC-1008
Digital input (PNP)
24V DC
8-channel
GC-1018
Digital input (NPN)
24V DC
8-channel
GC-1502
Counter（200kHz max）
-
2-channel
Digital output
GC-2008
Digital output (PNP)
24V DC
8-channel
GC-2018
Digital output (NPN)
24V DC
8-channel
GC-2204
relay output
-
4-channel
GC-2302
PWM （20Hz~200kHz）
-
2-channel
Analog input
GC-3604
Voltage input, 16 bits
-5~+5V
4-channel
GC-3624
Voltage input, 16 bits
10V~+10V
4-channel
GC-3644
Current input, 16 bits
0-20mA
4-channel
GC-3654
Current input, 16 bits
4-20mA
4-channel
GC-3664
Voltage input, 16 bits
0~+5V
4-channel
GC-3674
Voltage input, 16 bits
0~+10V
4-channel
GC-3804
2-wire PT100, 16 bits
Thermal
resistance
4-channel
GC-3822
3-wire PT100, 16 bits
Thermal
resistance
2-channel

Vhandy Technology GC-4642 user manual
GC-3844/3854/3 864
K type / S type / T type
thermocouple
Thermocouple
4-channel
Analog
output
GC-4602
Voltage output, 16 bits
-5V~+5V
2-channel
GC-4622
Voltage output, 16 bits
-10V~+10V
2-channel
GC-4642
Current output, 16 bits
0-20mA
2-channel
GC-4652
Current output, 16 bits
4-20mA
2-channel
GC-4662
Voltage output, 16 bits
0~5V
2-channel
GC-4672
Voltage output, 16 bits
0~10V
2-channel
GC-4674
Voltage output, 12 bits
0~10V
4-channel
Special
module
GC-6101
RS232/RS485 extension
-
-
GC-6201
GPRS extension
-
-
GC-6221
4G extension
-
-
GC-6501
WiFi extension
-
-
Table 5.1 Selection table

Vhandy Technology GC-4642 user manual
Sales and service
Shenyang Vhandy Technology Co., Ltd.
Address: No.135-21, Changqing Street, Hunnan, Shenyang, Liaoning, China.
E-mail: [e-mail]
Tel/ Whatsapp: [phone]
Skype：live:sygckj
WeChat:gckj777
Website: gcanbus.com