1. Description The Modbus module with 10 digital inputs is designed for local switching operations. It is suitable to record potential-free switching states as for example electrical limit switches of ventilation valves or auxiliary contacts of power contactors. The inputs can be operated as contact and voltage inputs (A1, 24 VAC/DC, jumper J - A2) or with actuation to GND (A2, jumper J - A1), depending on the setting of the jumper J. The inputs can be scanned via a Modbus-Master. Setting of the slave address, bit rate and parity is done with the two address switches (x1 / x10) on the front. Possible settings are addresses 00 to 99 and bit rates 1200, 2400, 4800, 9600, 19200, 38400, 57600 und 115200 Bd. The device does not participate in bus communication if the address is 00 (reserved for broadcast commands).

2. Declaration of Conformity The device was tested according to the applicable standards. Conformity was proofed. The declaration of conformity is available at the manufacturer BTR NETCOM GmbH. Notes Regarding Device Description These instructions include indications for use and mounting of the device. In case of questions that cannot be answered with these instructions please consult supplier or manufacturer. The indicated installation directions or rules are applicable to the Federal Republic of Germany. If the device is used in other countries it applies to the equipment installer or the user to meet the national directions. Safety Instructions Keep the applicable directions for industrial safety and prevention of accidents as well as the VDE rules. Technicians and/or installers are informed that they have to electrically discharge themselves as prescribed before installation or maintenance of the devices. Only qualified personnel shall do mounting and installation work with the devices, see section “qualified personnel”. The information of these instructions have to be read and understood by every person using this device. Symbols Warning of dangerous electrical voltage

3. Technical Data Protocoll Modbus RTU Transmission rate 1200 ... 115200 Bd (factory setting 19200 Bd Even) Cabling RS485 two wire bus with voltage equalizing cable in bus / line topology Supply Operating voltage range 20 ... 28 V AC/DC (SELV) Current consumption 85 mA AC / 75 mA DC Relative duty cycle 100 % Input Input voltage 30 V DC High-signal recognition >10 V AC/DC Housing Dimensions WxHxD 1.4 x 2.8 x 2.6 in. (35 x 70 x 65 mm) Weight 83 g Mounting position any Mounting standard rail TH35 per IEC 60715 Mounting in series the maximum quantity of modules without space connected in line is limited to 15 or to a maximum power consumption of 2 Amps (AC or DC) per connection to the power supply. For any similar block of additional modules a separate connection to the power supply is mandatory. Material Housing Polyamide 6.6 V0 Terminal blocks Polyamide 6.6 V0 Cover plate Polycarbonate Type of protection (IEC 60529) Housing IP40 Terminal blocks IP20 Terminal blocks Supply and bus 4 pole terminal block max. AWG 16 (1,5 mm²) solid wireg max. AWG 18 (1,0 mm²) stranded wire Wire diameter min. 0.3 mm up to max. 1.4 mm (terminal block and jumper plug are included to each packing unit) Module connection Input/Output max. AWG 12 (4.0 mm²) solid wire max. AWG 14 (2.5 mm²) stranded wire Wire diameter min. 0.3 mm up to max 2.7 mm Temperature range Operation -5 °C ... +55 °C Storage -20 °C ... +70 °C Protective circuitry polarity reversal protection of operating voltage polarity reversal protection of supply and bus Display Operating and bus activity green LED Error indication red LED Status of the inputs yellow LED