PLC specific 4G wireless communication module (new model)

Product Function Brief Description:

1. Mobile APP, mobile and computer web monitoring PLC

2. Configuration software remotely monitors through OPC communication

3. SMS alarm(and optional WeChat alarm)

The GRM240 series products support these 3 functions

Serial communication protocol supports:GRM242 and GRM243 support Siemens S7200 Smart PLC network port protocol, RS485 communication port supports Siemens S7-200 PPI protocol, Mitsubishi FX PLC protocol, supports all FX series models, Omron HOSTLINK protocol, etc., and can be connected to various manufacturers and models of PLCs through RS485 communication port. Both the network port and RS485 communication port support MODBUS host protocol, which can connect to any domestic PLC and instrument that supports Modbus protocol. They also support MODBUS slave protocol and can connect to touch screens such as Weilun and Siemens.

Network port communication protocol supports:MODBUS-TCP (Server and Client) S7-200 SMART。

Attention: If you need to communicate with Siemens S7-300/400, S7-1200, S7-1500 PLC, AB PLC, Mitsubishi Q series PLC through network port, the model number needs to be GRM244.

Support MQTT data transmission: The GRM module can directly perform MQTT data transmission externally; MQTT data transmission can also be performed externally through the macro control server.

All models do not support remote download and debugging of PLC. If remote download and debugging of PLC is required, GRM550 series models need to be selected:

PLC program remote download and debugging module (new model)

GRM240 Selection Guide:The model suffix - X indicates the presence of native IO， The selection of IO interfaces can be found at the bottom of this page, such as GRM242Q-4D4I4Q, which has 4 switch inputs, 4 0 to 20MA analog inputs, and 4 relay outputs,Model suffix - C indicates no native IOOnly includes communication ports.

Model Introduction:

GRM242Q-C

Function: 1 RS485 communication interface+4G/wired internet access

GRM243Q-C

Function: 2 RS485 communication interfaces+4G/wired internet access

GRM241N-8I4Q

Function: 8-way 4-20mA current input+4 relay outputs+Internet connection only using Ethernet cable

be careful:

1. The module comes with 12 IO channels, which are grouped into four channels and not configured separately for each channel.

2. If output is required, 4-channel relays or 2-channel current and voltage outputs can be selected.

3. Two PT100 temperature measurement inputs can be provided, but the module's output is not available at this time. The other eight inputs are still available.

GRM242Q-4D4I2P

Function: 4-channel digital input+4-channel current input+2-channel PT100+1-channel RS485 communication interface+4G/wired internet access

4. Optional 8-channel NTC temperature measurement, with an input accuracy of 0.1 degrees (similar to PT100) and a temperature measurement range of -30 to 100 degrees. The giant control comes standard with imported NTC temperature measurement waterproof probes.

5. The commonly used IO configurations are as follows:

Example of selection:

Need 1 RS485 communication port+4 switch inputs+4 4-20mA current inputs+4 relay outputs+4G internet connection+Network cable for internet access

1. Model selection: GRM242Q-4D4I4Q. If you only need to access the internet through a network cable, choose the modelGRM242N-4D4I4Q； If no IO interface is required, select GRM242Q-C, - C means no local IO, only communication port

2. Only those with SIM cards support SMS and phone alarm.

3. The letter N represents the ability to access the internet through a wired network cable, the letter Q represents 4G internet and wired internet, and the letter C represents the absence of local IO.

4. If using the module abroad, it is necessary to order the international version and indicate the country name used when placing the order.

5. The default free version of the website and mobile app monitor real-time data. If you need the server's historical data function, it is a paid function. Please specify when placing an order. (Including: historical curves, historical reports, historical alarms, WeChat push notifications)

Historical records and WeChat alarm options:

Model example:

GRM242Series1 485 communication port， Q represents mobile card internet access+wired internet access, with IO interface

GRM242Q-4D4I4Q、GRM242Q-8D4Q、GRM242Q-12D、GRM242Q-12I、GRM242Q-8D4I、GRM242Q-4D8I、GRM242Q-8I4Q、GRM242Q-4D4I2C、GRM242Q-8I2C

If an IO interface is not required, choose GRM242Q-C, and the - C after the model indicates that it does not come with an IO interface

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GRM242series1 485 communication port, NExpressing support for internet access through Ethernet ports, with IO interface

GRM242NQ-4D4I4Q、GRM242NQ-8D4Q、GRM242NQ-12D、GRM242NQ-12I、GRM242NQ-8D4I、GRM242NQ-4D8I、GRM242NQ-8I4Q、GRM242NQ-4D4I2C、GRM242NQ-8I2C

If no IO interface is required, select GRM242NQ-CThe - C after the model indicates that it does not come with an IO interface

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GRM243Series 2A 485 communication port， Q represents mobile card internet access+wired internet access, with IO interface

GRM243Q-4D4I4Q、GRM243Q-8D4Q、GRM243Q-12D、GRM243Q-12I、GRM243Q-8D4I、GRM243Q-4D8I、GRM243Q-8I4Q、GRM243Q-4D4I2C、GRM243Q-8I2C

If an IO interface is not required, choose GRM243Q-C, and the - C after the model indicates that it does not come with an IO interface

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GRM243seriesTwo 485 communication ports, NExpressing support for internet access through Ethernet ports, with IO interface

GRM243NQ-4D4I4Q、GRM243NQ-8D4Q、GRM243NQ-12D、GRM243NQ-12I、GRM243NQ-8D4I、GRM243NQ-4D8I、GRM243NQ-8I4Q、GRM243NQ-4D4I2C、GRM243NQ-8I2C

If no IO interface is required, select GRM243NQ-CThe - C after the model indicates that it does not come with an IO interface

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GRM244Series 2A 485 communication port， Q represents mobile card internet access+wired internet access, with IO interface

GRM244Q-4D4I4Q、GRM244Q-8D4Q、GRM244Q-12D、GRM244Q-12I、GRM244Q-8D4I、GRM244Q-4D8I、GRM244Q-8I4Q、GRM244Q-4D4I2C、GRM244Q-8I2C

If an IO interface is not required, choose GRM244Q-C, where - C after the model indicates no IO interface

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GRM244seriesTwo 485 communication ports, NExpressing support for internet access through Ethernet ports, with IO interface

GRM244NQ-4D4I4Q、GRM244NQ-8D4Q、GRM244NQ-12D、GRM244NQ-12I、GRM244NQ-8D4I、GRM244NQ-4D8I、GRM244NQ-8I4Q、GRM244NQ-4D4I2C、GRM244NQ-8I2C

If no IO interface is required, select GRM244NQ-CThe - C after the model indicates that it does not come with an IO interface

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GRM241SeriesNo 485 communication port，Q represents mobile card internet access+wired internet access, with IO interface

GRM241Q-4D4I4Q、GRM241Q-8D4Q、GRM241Q-12D、GRM241Q-12I、GRM241Q-8D4I、GRM241Q-4D8I、GRM241Q-8I4Q、GRM241Q-4D4I2C、GRM241Q-8I2C

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GRM241Series not available485 communication port,NExpressing support for internet access through Ethernet ports, with IO interface

GRM241NQ-4D4I4Q、GRM241Q-8D4Q、GRM241NQ-12D、GRM241NQ-12I、GRM241NQ-8D4I、GRM241NQ-4D8I、GRM241NQ-8I4Q、GRM241NQ-4D4I2C、GRM241NQ-8I2C

GRM240 Description:

1. The network port supports both device and cloud connection simultaneously (the option to allow cloud connection is configured in the project options)

2. All models come with MQTT push notifications, WeChat alerts, and historical data with the same specifications as the GRM560 series (WeChat alerts and historical records are optional).

3. All come with Modbus TCP Server and OPC UA Server, allowing other OPC UA clients to access our data.

4. All have LAN Web API interfaces.

5. GRM241 cannot connect to any device, GRM242 and GRM243 support connecting to all serial devices, and network devices support Modbus TCP and Siemens 200 PLC

6. Added GRM244 model, with network port supporting all PLC models

7. The GRM240 series has two types of motherboards, one with a relay and one without a relay. The motherboard with relays and GRM230 starting with 26 have the same available IO types.

8. The 240 motherboard with DA and no relay is a newly designed one that uses 24 bit high-precision AD. Now, all three sets of ABQ inputs can be used as PT100.

9. Added support for two wire PT100 mode, with each set of inputs capable of connecting 4 two wire PT100 or 2 three wire PT100, and a maximum of 12 two wire PT100 or 6 three wire PT100 as a whole.

10. The new generation of DA still only has two channels, but the accuracy has significantly improved, with a nominal accuracy of 0.1%, which is the same as the accuracy of AD input. Actually, it can usually achieve an accuracy of 0.05%.

11. The new AD has greatly improved the drift of NTC probes in long and low-temperature situations, so it is recommended to choose models without relays as much as possible when using NTC.

Rated values of various error parameters for the analog quantity of the new 240:

PT100： 0.1+(0.0005 * |t|) ℃ ，

As a comparison, the rated error of the national standard A-level PT100 probe is 0.15+(0.002 * | t |) ℃

DA output current/voltage: 0.25 ‰ * range+0.25 ‰ * reading, nominal 0.5 ‰

Current input: 0.25 ‰ range+0.25 ‰ reading, nominal 0.5 ‰

Voltage input: 1 ‰ * range+0.5 ‰ * reading, nominal 1.5 ‰

NTC temperature measurement: The error from -40 degrees to positive 60 degrees is less than 0.5 degrees, and the error from positive 100 degrees is less than 1 degree. This error includes the sum of the measurement circuit error and the error of our standard probe.

Detailed description of the main functions of the product:

1. Monitor PLC with web browser or APP on mobile phone

3Monitor PLC with configuration software on the computer end

1) Engineers only need to log in to the module number and password of GRM500 on a computer with internet access, and use configuration software for remote monitoring. Due to the use of OPC interface, it can support various configuration software such as Kingview, Force Control, WINCC, etc. Compared to transparent transmission mode, this type of communication method greatly improves speed and saves at least 50% of traffic.

2) As long as the computer with configuration software installed can access the internet, PLC can be remotely monitored