I/O BoardsBoard selection

I/O board selection guide

BLIIoT controllers are configured by plugging I/O boards into the host. There are two board series, X and Y, and each series works with different hosts. The table below reproduces the Model Selection table from the BLIIoT product pages.

ARMxy series

BL310 · BL330 · BL335 · BL360 · BL370 · BL410 · BL440 · BL450

Slot layout	1 X board + 0 to 2 Y boards
Selection rules	The pin count of the X slot determines which X boards fit. Depending on the model, there are either no Y slots or two.

These are industrial ARM computers running Linux. Use them where communication ports (RS485, RS232, CAN) need to be expanded.

EdgeIO series

BL190 · BL191 · BL192 · BL192Pro · BL193 · BA190 · BA190Pro

Slot layout	1 to 3 Y boards (X boards cannot be used)
Selection rules	There are two slot counts, 1 and 3, and two case sizes, 30×83×110mm and 40×83×110mm.

These controllers handle protocol conversion and I/O collection in one unit. Only one communication board (Y61) can be fitted per controller.

Y Series

Y series I/O boards

EdgeIO series uses Y boards only. The ARMxy series also has 2 Y slots depending on the model.

Digital input/output

Y01	8-channel mixed digital — 4DI (low-level) + 4DO (active low) · output current depends on the host
Y02	8-channel mixed digital — 4DI (high-level) + 4DO (active high) · output current depends on the host
Y11	8-channel digital input — NPN (low-level trigger)
Y12	8-channel digital input — PNP (high-level trigger)
Y13	8-channel digital input — dry contact
Y21	8-channel digital output — PNP, 100mA per channel
Y22	8-channel digital output — NPN, 100mA per channel
Y24	4-channel relay output — 250VAC/30VDC, 2A, 30W

Analog input

Y31	4-channel analog input — 0~20mA / 4~20mA (4-wire), 16-bit, ±0.1% FSR
Y33	4-channel analog input — 0~5V / 0~10V (4-wire), 16-bit, ±0.1% FSR
Y34	4-channel analog input — 0~5V / 0~10V differential
Y36	4-channel analog input — ±5V / ±10V differential
Y37	4-channel IEPE measurement — low-impedance voltage signals such as acceleration, pressure and noise

Analog output

Y41	4-channel current output — 0~20mA / 4~20mA, 12-bit, load ≤1kΩ
Y43	4-channel analog output — 0~5V / 0~10V
Y46	4-channel analog output — ±5V / ±10V

Temperature and resistance

Y51	2-channel RTD input — 3-wire PT100 (-200~850℃)
Y52	2-channel RTD input — 3-wire PT1000 (-50~300℃)
Y53	2-channel RTD input — 4-wire PT100
Y54	2-channel RTD input — 4-wire PT1000
Y56	Resistance measurementARMxy only
Y57	Voltage measurementARMxy only
Y58	4-channel TC input — J, K, T, E, R, S, B, N, 16-bit

Communication and pulse

Y61	4-channel serial — RS485 / RS232 selectableEdgeIO only
Y62	4-channel serial — 1×CAN + 3×RS485/RS232EdgeIO only
Y63	4-channel serial — RS485 or RS232 (isolated)ARMxy only
Y95	8-channel pulse — 4-channel pulse output + 4-channel counting (NPN)
Y96	8-channel pulse — 4-channel pulse output + 4-channel counting (PNP)

The Y lineups of the two series are not identical. Y56, Y57 and Y63 appear only in the ARMxy table; Y61 and Y62 only on the EdgeIO side. For Y95 and Y96, the user manual gives a maximum pulse output frequency of 20kHz, and counting of one high-speed channel at 50kHz plus three low-speed channels at 5kHz. Some places on the manufacturer's website state 150kHz, so please confirm before applying these figures.

X Series

X series I/O boards and slots

X boards are for the ARMxy series only. The pin count of the host slot determines which boards fit.

6PIN X10 ~ X16 2 to 4 points

10PIN X20 ~ X22 4 points, mainly serial and CAN

20PIN X23 ~ X30 Serial plus mixed DI/DO, up to 16 points

Host slots (BL360 series)

Model	Ethernet	USB	HDMI	X slot	Y slot	Dimensions
BL360	1×10/100M	2	—	1×6PIN	—	42×83×110mm
BL360A	1×10/100M	2	—	1×20PIN	—	42×83×110mm
BL360B	1×10/100M	2	—	1×20PIN	2	48×83×110mm
BL360C	1×10/100M	2	—	1×10PIN	—	42×83×110mm
BL361	1×1000M, 1×10/100M	2	—	1×6PIN	—	42×83×110mm
BL361A	1×1000M, 1×10/100M	2	—	1×20PIN	—	42×83×110mm
BL361B	1×1000M, 1×10/100M	2	—	1×20PIN	2	48×83×110mm
BL362	1×1000M, 2×10/100M	2	1	1×6PIN	—	42×83×110mm
BL362A	1×1000M, 2×10/100M	2	1	1×20PIN	—	42×83×110mm
BL362B	1×1000M, 2×10/100M	2	1	1×20PIN	2	48×83×110mm

This table covers the BL360 series. Other ARMxy models have different slot configurations, so check the table on the relevant product page.

Host slots (BL340 series)

Model	Ethernet	USB	HDMI	X slot	Y slot	Dimensions
BL340	1×100M	2	—	1×6PIN	—	42×83×110mm
BL340A	1×100M	2	—	1×20PIN	—	42×83×110mm
BL340B	1×100M	2	—	1×20PIN	2	48×83×110mm
BL340C	1×100M	2	—	1×10PIN	—	42×83×110mm
BL341	2×100M	2	—	1×6PIN	—	42×83×110mm
BL341A	2×100M	2	—	1×20PIN	—	42×83×110mm
BL341B	2×100M	2	—	1×20PIN	2	48×83×110mm
BL342	3×100M	2	1	1×6PIN	—	42×83×110mm
BL342A	3×100M	2	1	1×20PIN	—	42×83×110mm
BL342B	3×100M	2	1	1×20PIN	2	48×83×110mm

All Ethernet ports are 100M. Only the BL342 series has HDMI.

X board channel layouts (X10–X30)

Model	RS232/RS485	CAN	DI	DO	GPIO	Pins
X10	2	—	—	—	—	6PIN
X11	—	2	—	—	—	6PIN
X12	1	1	—	—	—	6PIN
X13	—	—	2	2	—	6PIN
X14	—	—	4	—	—	6PIN
X15	—	—	—	4	—	6PIN
X16	—	—	—	—	4	6PIN
X20	4	—	—	—	—	10PIN
X21	3	1	—	—	—	10PIN
X22	2	2	—	—	—	10PIN
X23	4	—	4	4	—	20PIN
X24	3	1	4	4	—	20PIN
X25	2	2	4	4	—	20PIN
X26	2	—	8	4	—	20PIN
X27	1	1	8	4	—	20PIN
X28	2	—	12	—	—	20PIN
X29	1	1	12	—	—	20PIN
X30	—	—	—	—	16	20PIN

The catalog also lists X31 (7DI + 12DO). It does not appear in the BL360 page table, so please ask us whether it can be applied.

X0~X8 — BL310 · BL335 only

A different board family from X10–X30 above (2×5PIN). The numbers look similar but the boards are not interchangeable.

X0	8×GPIO
X1	4×RS485
X2	4×RS232
X3	2×RS485 + 2×RS232
X4	2×RS485 + 2×CAN
X5	2×RS232 + 2×CAN
X6	2×RS485 + 4×GPIO
X7	2×RS232 + 4×GPIO
X8	1×RS485 + 1×RS232 + 1×CAN + 2×GPIO

PinoutTerminal layout

Terminal layout by board

Based on BL340 user manual V1.1. Even for the same board, the terminal numbering order can differ by host model, so check the product label and the user manual for that host before wiring. The names printed on the terminals differ from board to board. The DI common terminal appears as DICOM, DI_COM or COM, and the DO common terminal as DOCOM or GND_IOS; the function is the same.

Wiring guide — see diagrams for sensors · lamps · relays · RS485 →

X board — 6 pins (2×3PIN)

Model	1	2	3	4	5	6
X10	ttyS1-A	ttyS1-B	GND	ttyS2-A	ttyS2-B	GND
X13	DO1	DO2	GND	DI1	DI2	COM
X14	DI1	DI2	GND	DI3	DI4	COM
X15	DO1	DO2	GND	DO3	DO4	GND
X16	PG3	PG5	GND	PG0	PA11	GND

X board — 20 pins (2×10PIN)

Model	1	2	3	4	5	6	7	8	9	10	11	12	13	14	15	16	17	18	19	20
X20	GND	GND	ttyS0-A	ttyS0-B	ttyS5-A	ttyS5-B	ttyS2-A	ttyS2-B	ttyS1-A	ttyS1-B
X23	DI4	DO4	DI3	DO3	DI2	DO2	DI1	DO1	COM	POWER	GND	GND	ttyS0-A	ttyS0-B	ttyS5-A	ttyS5-B	ttyS2-A	ttyS2-B	ttyS1-A	ttyS1-B
X26	DI6	DO4	DI5	DO3	DI4	DO2	DI3	DO1	GND	POWER	COM	GND	DI2	DI8	DI1	DI7	ttyS2-A	ttyS2-B	ttyS1-A	ttyS1-B
X28	DI6	DI12	DI5	DI11	DI4	DI10	DI3	DI9	GND	POWER	COM	GND	DI2	DI8	DI1	DI7	ttyS2-A	ttyS2-B	ttyS1-A	ttyS1-B
X30	PH10	PA11	PG1	PG0	PG4	PG5	PG2	PG3	POWER	POWER	GND	GND	PG9	PG8	PH2	PH3	PG15	PG16	PG6	PG7

X20 has 10 pins (2×5PIN), so it has no terminals from no. 11 onward. The POWER terminal on X30 is 3.3V, and the input/output function of each port is defined by the user. For terminals 9 and 11 on X23, the BL340 manual and the dedicated X23 manual do not agree. The table above follows the dedicated X23 manual (9 = COM, 11 = GND).

Y board — 10 pins

Model	1	2	3	4	5	6	7	8	9	10
Y01	DO1	DO2	DO3	DO4	GND_IOS	DI_COM	DI1	DI2	DI3	DI4
Y02	DO1	DO2	DO3	DO4	GND_IOS	DI_COM	DI1	DI2	DI3	DI4
Y11	DI1	DI2	DI3	DI4	DI_COM	DI_COM	DI5	DI6	DI7	DI8
Y12	DI1	DI2	DI3	DI4	DI_COM	DI_COM	DI5	DI6	DI7	DI8
Y21	DO1	DO2	DO3	DO4	GND_IOS	GND_IOS	DO5	DO6	DO7	DO8
Y22	DO1	DO2	DO3	DO4	GND_IOS	GND_IOS	DO5	DO6	DO7	DO8
Y31	AI1+	AI1-	AI2+	AI2-	GND	GND	AI3+	AI3-	AI4+	AI4-
Y33	AI1+	AI1-	AI2+	AI2-	/	/	AI3+	AI3-	AI4+	AI4-
Y34	AI1+	AI1-	AI2+	AI2-	/	/	AI3+	AI3-	AI4+	AI4-
Y36	AI1+	AI1-	AI2+	AI2-	/	/	AI3+	AI3-	AI4+	AI4-
Y41	AO1+	AO1-	AO2+	AO2-	/	/	AO3+	AO3-	AO4+	AO4-
Y43	AO1+	AO1-	AO2+	AO2-	/	/	AO3+	AO3-	AO4+	AO4-
Y44	AO1+	AO1-	AO2+	AO2-	/	/	AO3+	AO3-	AO4+	AO4-
Y45	AO1+	AO1-	AO2+	AO2-	/	/	AO3+	AO3-	AO4+	AO4-
Y46	AO1+	AO1-	AO2+	AO2-	/	/	AO3+	AO3-	AO4+	AO4-
Y51	/	PT1+	PT1-	PT1-	/	/	/	PT2+	PT2-	PT2-
Y52	/	PT1+	PT1-	PT1-	/	/	/	PT2+	PT2-	PT2-
Y53	PT1+	PT1+	PT1-	PT1-	/	/	PT2+	PT2+	PT2-	PT2-
Y54	PT1+	PT1+	PT1-	PT1-	/	/	PT2+	PT2+	PT2-	PT2-
Y58	T1+	T1-	T2+	T2-	/	/	T3+	T3-	T4+	T4-
Y63	ttyWCH0-A	ttyWCH0-B	ttyWCH1-A	ttyWCH1-B	GND	GND	ttyWCH2-A	ttyWCH2-B	ttyWCH3-A	ttyWCH3-B

GND_IOS is the DO common terminal and DI_COM is the DI common terminal. A slash (/) marks an unused terminal. If you choose Y63, no second Y board can be added. Y24 is listed in the BL340 manual with an analog output layout, but the manufacturer's product information describes it as a relay output module. We treat that as a printing error and have left it out of the table. We will confirm and reply to your enquiry about its pinout.

ExamplesExample configurations

Example configurations

The following are example configurations that follow from the rules in the tables above. They are not records of actual deliveries.

Communication expansion for legacy equipment

BL360B+X25+Y51+Y31

Channels obtained	RS485/RS232 2 + CAN 2 + DI 4 + DO 4 + PT100 2 + AI 4

X25 in the 20PIN slot provides serial and CAN at the same time, and the two Y slots add temperature and analog input.

Protocol conversion plus field measurement

BL192Pro (3 slots)+Y31+Y51+Y01

Channels obtained	AI 4 + PT100 2 + DI 4 + DO 4

This configuration sends the collected values out over MQTT, OPC UA and Modbus TCP at the same time. X boards do not fit.

Production count and run-time totals

BL192 (3 slots)+Y95+Y11+Y24

Channels obtained	Pulse counter 4 + PWM 4 + DI 8 + relay 4

Pulses from proximity sensors count production, contacts determine run/stop status, and the relays output alarms.

Collecting from multiple instrument lines

BL360A+X20

Channels obtained	RS485/RS232 4

A single X20 in the 20PIN slot provides four serial lines. This model has no Y slot, so analog expansion is not possible.

Notes

Before you order

For Y01 and Y02, the per-channel output current differs between the module's own user manual and the host (BL192, BL192Pro) user manual. The former states 200mA, the latter 100mA. If you are connecting a high-current load such as a solenoid, please confirm before ordering. We will confirm and reply to your enquiry.
An X board whose pin count does not match the slot will not physically fit. Decide on the host model first, then select the board.
X boards cannot be used with the EdgeIO series. If you need serial expansion, use Y61, but only one per controller.
NPN / PNP must match the wiring method of the field sensors and actuators. The model differs even when the channel count is the same.
Boards are normally specified when the host is ordered. If a board may need to be changed after shipment, please tell us in advance.

Tell us the channel count and wiring method and we will reply with a host and board combination. Sales and technical enquiries →