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| | | BRODERSEN | | |
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| | | Compact Utility Outstation with 24IO and serial ports RTU870 | | |
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| | | Programmer port / Serial interface The RTU RS232 programming interface includes a driver which is able both to handle the MODBUS protocol (RTU slave) and Brodersen RAC commands. The standard MODBUS protocol is used mainly for configuration and up/down-load of programmes. A special command set is used. The module has Modbus Slave address 1 as fixed address. The RS232 port (6 pole modular jack RJ11) is equipped with very limited hardware handshake signals (DCD, RTS). | | |
| | | CL Block diagram | | |
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| | | RS232 programming port (6 pole RJ11) | | |
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| | | | | | | | | | | Pin no | Signal | Description/Remarks | | | | 1 | SG | Signal ground | | | | 2 | RTS | Request to send (out) | | | | 3 | RX | Receive data (in) | | | | 4 | TX | Transmit data (out) | | | | 5 | DCD | Data Carrier Detect | | | | 6 | GND | General ground | | | | | | | | | | | | | | | | |
| | | Wiring schemes for CL interface at 2/4 wire and active/passive Wiring scheme passive CL/TTY | | |
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| | | | | | | | | | | Pin No/type | 4-wire pass. | 2-wire pass. | | | | 1 RxI | nc | nc | | | | 2 RxC | RX+ | Br. 2-7 | | | | 3 RxE | RX- | RX (+) | | | | 4 RxG | nc | nc | | | | 5 TxE | nc | nc | | | | 6 TxA | TX+ | TX (-) | | | | 7 TxK | TX- | Br. 2-7 | | | | 8 TxG | nc | nc | | | | | | | | | | |
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| | | Meter interfaces / Serial interface The RTU are equipped with 2 parallel coupled serial interfaces; - RS232 V24 Interface - Current Loop (TTY 20mA) NOTE: Only one of the port must be used at the same time as they are direct internally parallel connected. | | |
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| | | CL/2-Wlre Passive | | |
| | | CL/4-Wire Passive | | |
| | | RS232 Meter interface The RS232 meter port (9 pole sub-D) is equipped with hardware handshake signals as listed below. RS232 meter port connector (9 pole sub-D) | | |
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| | | | | | | | | | | Pin no | Signal | Description/Remarks | | | | 1 | DCD | Data Carrier Detect | | | | 2 | RX | Receive data (in) | | | | 3 | TX | Transmit data (out) | | | | 4 | DTR | Data terminal ready (out) | | | | 5 | SG | Signal ground | | | | 6 | DSR | Data Send Ready | | | | 7 | RTS | Request to send (out) | | | | 8 | CTS | Clear to send (in) | | | | 9 | RI | Ring Indicator | | | | | | | | | | |
| | | Rx + Rx- Tx + Tx- | | |
| | | Rx(+) Tx(-) | | |
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| | | Wiring scheme active CL/TTY | | |
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| | | | | | | | | | | Pin No/type | 4-wire active | 2-wire active | | | | 1 RxI | RX+(24V) [RV+] | RX [V+] | | | | 2 RxC | RX- [RV-] | Br. 2-7 | | | | 3 RxE | Br. 3-4 | Br. 3-4 | | | | 4 RxG | Br. 3-4 | Br. 3-4 | | | | 5 TxE | TX+ (24V) [TV+] | nc | | | | 6 TxA | TX- [TV-] | TX [V-] | | | | 7 TxK | Br. 7-8 | Br. 2-7 | | | | 8 TxG | Br. 7-8 | nc | | | | | | | | | | |
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| | | Current Loop (TTY) port The CL interface is a serial TTY interface for meters. It is possible by selection of terminal to chose between 2 or 4 wire, and passive and active connection. CL meter port (8 pole screw connector) | | |
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| | | | | | | | | | | | Pin no | Signal | Description/Remarks | | | | 1 | RxI | 24V RX+ (out) | | | | | 2 | RxC | RX+ | (out) | | | | 3 | RxE | RX- | (out) | | | | 4 | RxG | Signal ground | (GND power) | | | | 5 | TxE | 24V TX+ (out) | | | | | 6 | TxA | TX+ | (in) | | | | 7 | TxK | TX- | (in) | | | | 8 | TxG | Signal ground | (GND power) | | | | | | | | | | | |
| | | CL/2-Wlre Active [xx] = IEC1107 symbols | | |
| | | CLM-WIre Active [xx] = IEC1107 symbols | | |
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| | | Rx[V+] | | Tx[V-] | | |
| | | Rx+ Rx- Tx+ Tx-[RV+] [RV-] [TV+] [TV-] | | |
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| | | Brodersen Controls A/S | | Industrivej 3 | | DK-4000 Roskilde | | Denmark | | * Tel (+45) 4674 0000 | | Fax (+45) 4675 7336 | | |
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| | | 6 | | |
| | | 40068.100 / 48.05 | | |
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