
BL compact™ fieldbus station for PROFIBUS-DP
4 Analog Inputs for Current or Voltage
BLCDP-4M12MT-4AI-VI
Type designation BLCDP-4M12MT-4AI-VI
Ident-No. 6811167
Fieldbus transmission rate 9.6 kbps …12 Mbps
Adjustment transmission rate Automatic detection
Fieldbus connection technology 2 × M12, 5-pole, reverse keyed
Fieldbus address range 0...99
Fieldbus addressing 2 decimally coded rotary switches
Service interface RS232 interface
■ On-machine Compact fieldbus I/O block
■ PROFIBUS-DP slave
■ 9.6 kbps … 12 Mbps
■ Two 5-pole M12, reverse-keyed, connec-
tors for fieldbus connection
■ 2 rotary switches for node address
■ IP67, IP69K
■ M12 I/O connectors
■ LEDs indicating status and diagnostics
■ Electronics galvanically separated from
the field level via optocouplers
■ 4 analog inputs for current or voltage
■ 0/4…20 mA or -10/0…+10 VDC (se-
lectable per channel)
Analog inputs from 4AI-VI
Operating modes 0/4 … 20 mA or -10/0 … 10 VDC
Resolution 16 bit
Repeatability < 0.05 %
Temperature coefficient < 300 ppm / ºC of full scale
Vibration test according to IEC 61131-2
Extended vibration resistance
- up to 20 g (at 10 up to 150 Hz) For mounting on base plate or machinery
Shock test according to IEC 61131-2
Electromagnetic compatibility according to IEC 61131-2
Approvals and certificates CE, cULus
Dimensions (W x L x H) 71 x 113 x 32.5mm
Operating temperature -40...+70 ºC
Storage temperature -40...+85 ºC
Relative humidity 15 to 95% (non-condensing)
Protection class IP67
IP69K
Housing material Glass-filled nylon, nickel plated brass connectors
Housing color Black
Window material Lexan
Material screw Nickel-plated brass
Material label Polyester with polycarbonate overlay
Ground label material Nickel plated brass
Weight 390 ± 20 g
Mounting 2 × 5.4 mm diameter holes, 1.7 Nm torque
Edition • Rev. A • 2019-01-21T16:51:59+01:00
1 / 5 TURCK Inc.

BL compact™ fieldbus station for PROFIBUS-DP
4 Analog Inputs for Current or Voltage
BLCDP-4M12MT-4AI-VI
Pinning and wiring diagram
PROFIBUS-DP
Fieldbus cable (example): RSSW RKSW 455-2M ident-no. U0350
or RSSW-RKSW455-2M ident-no. 6602222
Pin Assignment
Analog Inputs
Extension cable (example): RK 4.5T-2-RS 4.5T/S653 ident-no.
U2187-09 or RKC4.5T-2-RSC4.5T/TEL ident-no. 6625212
Pin Assignment
2-wire Technology (Current)
2-wire Technology (Voltage)
3-wire Technology
Edition • Rev. A • 2019-01-21T16:51:59+01:00
2 / 5 TURCK Inc.
4-wire Technology
4-wire Technology (External Power)

BL compact™ fieldbus station for PROFIBUS-DP
4 Analog Inputs for Current or Voltage
BLCDP-4M12MT-4AI-VI
Auxiliary Power
Extension cable (example): RKC 4.4T-2-RSC 4.4T ident-no.
U5264 or RKC4.4T-2-RSC4.4T/TEL ident-no. 6625208
Pin Assignment
Edition • Rev. A • 2019-01-21T16:51:59+01:00
3 / 5 TURCK Inc.

BL compact™ fieldbus station for PROFIBUS-DP
4 Analog Inputs for Current or Voltage
BLCDP-4M12MT-4AI-VI
Station LED status
LED Color Status Description
IOs OFF No power
RED ON Low power or station error
RED FLASHING (1 Hz) I/O module configuration error
RED FLASHING (4 Hz) No I/O module bus communication
GREEN ON Station ok
GREEN FLASHING Force mode active
BUS
GREEN ON Field bus communication active
GREEN FLASHING (1 Hz) No field bus communication active, device status OK
RED ON Bus error at the gateway; no data exchange
RED FLASHING Faulty PROFIBUS-DP address
BUS
GREEN ON Field bus communication active
GREEN FLASHING (1 Hz) No field bus communication active, device status OK
RED ON Bus error at the gateway; no data exchange
RED FLASHING Faulty PROFIBUS-DP address
I/O LED status
LED Color Status Description
D * OFF No diagnostics active
RED ON Station error/ module bus communication failure
RED FLASHING (0.5Hz) Diagnostics active
AI channel OFF Not active
0...3
* D LED also indicates gateway diagnostics
GREEN ON Active
GREEN FLASHING (0.5 Hz) Underflow in measuring range
GREEN FLASHING (4 Hz) Overflow in measuring range
OFF No field bus communication
OFF No field bus communication
Edition • Rev. A • 2019-01-21T16:51:59+01:00
4 / 5 TURCK Inc.

BL compact™ fieldbus station for PROFIBUS-DP
4 Analog Inputs for Current or Voltage
BLCDP-4M12MT-4AI-VI
I/O Data Map
INPUT BYTE Bit 7 Bit 6 Bit 5 Bit 4 Bit 3 Bit 2 Bit 1 Bit 0
0
1
2
3
0 AI 10 LSBAI 1
1 AI 10 MSB
2 AI 11 LSBAI 1
3 AI 11 MSB
4 AI 12 LSBAI 1
5 AI 12 MSB
6 AI 13 LSBAI 1
7 AI 13 MSB
Edition • Rev. A • 2019-01-21T16:51:59+01:00
5 / 5 TURCK Inc.