8 Channel Ethernet Solid State Relay Module

1.Introduction

Numato Lab’s 8-Channel Ethernet Solid State Relay Module is a versatile product for controlling electrical and electronic devices remotely from a PC over an Ethernet link. Ease of use and wider operating system compatibility are the primary goals behind this product’s design. This simplicity allows the use of off-the-shelf Terminal Emulation programs such as HyperTerminal and TeraTerm for controlling the module with a simple set of human-readable commands through Telnet/Web page. For power users, this module can be controlled by writing programs in various programming languages

Applications

Home Automation
Lighting Control
Garden Equipment Control
Industrial Automation
Test Fixtures
DIY and Hobby

Board Features

Relay: 8 Solid State Relays with individual LEDs for status
3A Maximum Switching Current
GPIO: 10 GPIOs (3.3V), each can be configured as analog inputs
Analog Input Channels : 10 Analog Input Channels (Multiplexed with GPIOs) with 10-Bit Resolution.
Password-protected Web console and Telnet communication interface
LED indication for Power and individual relay status

User name	admin
Password	admin
ID	00000000
Host Name	ETHSSR8
IP Address	DHCP Enabled

No.	Command	Example	Description
1	usr	usr set xxxxxxxx	Sets the new username for telnet, where x can be any alphanumeric character. The username can be 1-8 characters long.
		usr get	Read the current username of telnet. The default username is "admin".
2	pass	pass set xxxxxxxx	Sets the new password for telnet, where x can be any alphanumeric character. The password can be 1-8 characters long.
		pass get	Read the current password of telnet. The default password is "admin".
3	config usr	config usr set xxxxxxxx	Sets the new username for configuration over USB, where x can be any alphanumeric character. The username can be 1-8 characters long.
		config usr get	Read the current username of configuration over USB. The default username is "admin".
4	config pass	config pass set xxxxxxxx	Sets the new password for configuration over USB, where x can be any alphanumeric character. The password can be 1-8 characters long.
		config pass get	Read the current password for configuration over USB. The default password is "admin".
5	telnet	telnet auth on/off	Enable and disable the telnet authentication. telnet auth on enabling the telnet authentication and telnet off disabling the telnet authentication.
		telnet auth get	Read the status of telnet authentication.
		telnet port set xx	Sets the telnet port, where xx can be in the range of 00 to 99. The default value of telnet port is 23.
6	access	access ip on/off	Enable or disabling the IP based access to the module, this command adds filtering. Once the command is enabled, the stored IP using the access ip set command will be able to access the module. By default access IP is disabled.
		access ip set N xxx.xxx.xxx.xxx	Set the acceptable IP in the network and save the same. Where N is the number 0-9, maximum 10 IP we can store in the non-volatile memory. Eg: access ip set 0 192.168.0. 2
		access ip get	Read the stored IP in the memory.
		access mac on/off	Enable or disabling the MAC-based access to the module, this command adds filtering. Once the command is enabled, the stored MAC using the access mac set command will be able to access the module. By default access MAC is disabled
		access mac set N XX XX XX XX XX XX	Set the acceptable MAC in the network and save the same. Where N is the number 0-9, maximum 10 MAC we can store in the non-volatile memory. Eg: access mac set 0 D4 93 98 D2 4A 34
		access mac get	Reads the stored MAC in the memory.
7	dhcp	dhcp on/off	Enable or disable the DHCP of the module.
8	ip	ip set xxx.xxx.xxx.xxx	Sets the static IP to the module. Eg: ip set 192.168.5.48
		ip get	Read the status of DHCP and the static IP. If DHCP is enabled it will display the DHCP status and if it is disabled it will display the static IP too
9	mac id get	mac id get	Read the MAC id of the module.
10	reboot	reboot	Exit the configuration interface and enter to the application mode and start the telnet communication.

11	relay	relay poweron xx	Sets the relay power on value. relay poweron 03 : Turn OFF and ON relays on power-on the module according to the specified hexadecimal value. 0 – Turn OFF the relay, 1 – Turn ON the relay. '03' - 0000 0011 : Relays 0 and 1 will be turned on once entered to the telnet mode. xx can be in range 00-0F : 4 Channel Ethernet Solid State Relay xx can be in range 00-FF : 8 Channel Ethernet Solid State Relay
12	gpio	gpio poweron xxx XXX	Set the GPIO power-on value and direction. gpio poweron 1c5 28d – Sets GPIOs IO direction and status respectively at each bit position according to the bits of the specified hexadecimal value. IO direction: 0 – To set the GPIO as output mode & 1 – To set the GPIO as input mode. IO status: 0 - To clear the GPIO & 1 - To set the GPIO. '1c5 28d’- (0001 1100 0101) (0010 1000 1101): GPIOs 1,3,4,5,9 are set to output mode & GPIOs 0,2,6,7,8 are set as input mode. GPIO 0,2,3,7, and 9 are set to High GPIO 1,4,5,6, and 8 are set to Low. Thus once entered to telnet mode, GPIOs 1,4,5 will be outputs and low. GPIOs 3 and 9 will be outputs and high. All the other GPIOs will be inputs. xxx, XXX can be in range 000-3FF

GPIO	ADC
IO0	ADC0
IO1	ADC1
IO2	ADC2
IO3	ADC3
IO4	ADC4
IO5	ADC5
IO6	ADC6
IO7	ADC7
IO8	ADC8
IO9	ADC9
3V3	3V3
GND	GND

No.	Command	Parameters	Example	Description
1	ver	None	ver	Returns firmware Version
2	id	get/set xxxxxxxx	id get, id set 12345678	Reads/Sets id of the module
3	usr	get/set xxxxxxxx	usr get, usr set admin	Reads/Sets User name
4	pass	get/set xxxxxxxx	pass get, pass set admin	Reads/Sets Password
5	relay	on/off/read, relay number readall/writeall	relay on 0,relay off 0, relay read 0, relay readall, relay writeall ff	Relay control
6	reset	None	reset	Reset relays to default state (all relays turned off)
7	adc	read, channel	adc read 0	Read Analog to Digital Converter input
8	gpio	set/clear/read, gpio number	gpio set 0	Control General Purpose Input/Output

9	gpio status x	gpio status 0	Read GPO status
10	info	info	Display information about the module including GPIO and Relay power-on status.

No.	Command	Example	Description
1	ver	ver	Returns current firmware version.
2	id	id get id set xxxxxxxx	Id get reads the module ID. Id set will assign a new ID to the module. “x” stands for alphanumeric characters including symbols. The new ID must be exactly 8 characters in length.
3	usr	usr get usr set xxxxxxxx	usr get reads the default User name. usr set will assign a new usr name to the module. “x” stands for alphanumeric characters including symbols. The new User name can be 1 – 8 characters length.
4	pass	pass get pass set xxxxxxxx	pass get reads the default Password. pass set will assign a new Password to the module. “x” stands for alphanumeric characters including symbols. The new Password can be 1 – 8 characters length.
5	relay	relay on x	Turns a particular relay on. The parameter “x“ stands for the relay number. The relay number starts from zero. See some examples below. relay on 0 – Turns on relay 0 relay on 1 – Turns on relay 1
		relay off x	Turns a particular relay off. The parameter “x“ stands for the relay number. The relay number starts from zero. See some examples below. relay off 0 – Turns off relay 0 relay off 1 – Turns off relay 1
		relay read x	Returns the status of a particular relay. The parameter “x” stands for the relay number. The relay number starts from zero. See some examples below. relay read 0 – Returns status of relay 0 relay read 1 – Returns status of relay 1 The data returned in response to this command will be either “on” or “off” depending on the current status of the relay
		relay readall	Reads the status of all relays in a single operation. The return value will a hexadecimal number with binary value 1 at bit positions for relays in ON state and 0 for relays in OFF state. Eg: a return value 00 (binary 0000 0000) means all relays are OFF. A value FF (binary 1111 1111) means all relays are ON relay readall – Returns status of all relays
		relay writeall xx	Control all relays in a single operation. A hexadecimal value must be specified with desired bit positions set to 0 or 1. A value 0 at a bit position will turn off the corresponding relay. A value 1 at a bit position will turn on the corresponding relay. relay writeall ff – Turns on all relays
6	reset	reset	Resets all relays to off state which is the default state. GPIOs are not by affected by the command.
7	adc	adc read x	Reads the analog voltage present at the ADC input mentioned. “x” stands for the number of ADC input. The response will be a number that ranges from 0 – 1023. Please see examples below. adc read 0 – Reads analog input 0 adc read 2 – Reads analog input 2
8	gpio	gpio set x	Sets the GPIO output status to high. Here “x” is the number of the GPIO. Please see examples below. gpio set 0 – Sets GPIO 0 to high state gpio set A – Sets GPIO 10 to high state
		gpio clear x	Sets the GPIO output status to low. Here “x” is the number of the GPIO. Please see examples below. gpio clear 0 – Sets GPIO 0 to low state gpio clear 2 – Sets GPIO 2 to low state
		gpio read x	Reads the digital status present at the input mentioned. Here “x” stands for the number of GPIO. The response will be either “on” or “off” depending on the current digital state of the GPIO. Please see examples below. gpio read 0 – Reads GPIO 0 status gpio read 2 – Reads GPIO 2 status

9	gpio	gpio status x	Read the GPIO status present at ‘x’ without changing the GPIO direction. gpio status 3 – Read status of GPIO3 and print either ‘1’ or ‘0’ depending on the status x can be 0 to 9
10	info	none	Display information about the module including GPIO and Relay power-on status.

Parameter *	Value	Unit
Basic Specifications
Number of relays	8
Number of GPIOs	10
Number of analog inputs (Multiplexed with GPIOs)	10
Digital circuit power supply voltage (External)	7-12	V
Maximum current drawn by digital circuitry	500	mA
IO Specifications
Maximum IO source current	IO0 – IO9	2mA
Maximum IO sink current	IO0 – IO9	2mA
GPIO input low voltage	0.15	V
GPIO input high voltage	3.3	V
GPIO output low voltage	0	V
GPIO output high voltage	3.3	V
ADC Specifications
Resolution	10	bits
Full scale range	0 – VDD	V
Reference voltage	VDD	V
Recommended Impedance of Analog Voltage Source	2.5	KΩ
Relay Specifications
Input signal voltage rating	7-12	V
Input current rating	5 – 12	mA
Operating frequency	47 – 70	Hz
Operating temperature	-30 – 100	°C
Storage Temperature	-30 – 125	°C
Maximum switching voltage	250VAC/ 100VDC#	V
Maximum switching current	3	A
Isolation Resistance	10	GΩ
Isolation voltage input to output	4000	Vrms
Maximum switching on response time	8.3 /5 (AC/DC)#	mS
Maximum switching off response time	8.3 /2 (AC/DC)#	mS

Relay State	Connection between IN/- and OUT/+
OFF	Open
ON	Close

Ethernet Solid State Relay Modules