CP BACNET Function

Transcription

1 CP BACNET Function The CP BACnet independently handles data traffic via Industrial Ethernet and BACnet protocol. The module has its own processor and can be put into service directly using the unique preset Ethernet address (MAC) via the network. Due to the support of the dynamic host configuration protocol (DHCP), the IP address can be assigned from a central DHCP server. The CP BACnet works in multi-protocol mode for the following communication services: PG/OP communication PG/OP communication allows all S7 stations connected to the network to be remotely programmed. S7 routing; using S7 routing it is possible to use PG communication across networks. S7 communication Open communication (SEND/RECEIVE) A large number of stations can be accessed thanks to the multicast function Use of the socket interface in the partner system possible without RFC 1006 Integral autocrossover function permits use of uncrossed connecting cables BACnet communication based on TCP/IP, BACnet server according to EN 16484, Part 5 Siemens completes its building control system DESIGO with the SIMATIC S7. DESIGO S7 introduces two new performance packages to building automation: Building Solution Building Integration These enable projects to be implemented for "Industrial Building Automation" where programmable logic controllers (PLCs) are required at the automation level. The DESIGO S7 Building Solution performance package permits the use SIMATIC S7 within a DESIGO system (control Page system 1429 for building automation) with an S7-HVAC Mar 2008 Siemens ITS

2 library (Heating, Ventilation and Air Conditioning), that is based on the library of DESIGO PX. Communication with the DESIGO system is by means of BACnet. This permits efficient engineering of HVAC applications. With DESIGO S7 Building Integration, existing SIMATIC S7 (software without HVAC library) components are efficiently integrated into a DESIGO system by means of BACnet communication. BACnet communication Based on TCP/IP, a BACnet server compliant with EN 16484, Part 5 is made available. The CP processes the protocol autonomously as far as possible so that the CPU is not burdened with the BACnet protocol. The CP BACnet optionally supports: BACnet communication for any SIMATIC software by mapping SIMATIC data onto BACnet HVAC functions with BACnet communication by using corresponding function blocks; these HVAC function blocks are a component of the block library and are to be incorporated in the S7 user program. Page 1430 Mar 2008 Siemens ITS

3 Linear structure with CP BACnet with integral switch Page 1431 Mar 2008 Siemens ITS

4 BACnet consists of: Standardized services that are processed autonomously by the CP Standardized objects that present a user view of the automation The actual configuration of the BACnet objects and their mapping to S7 data is performed by a BACnet mapping tool. The configuration data of the BACnet objects generated by the mapping tool can be downloaded to the SIMATIC S7 using the general download function or using Delta download. The mapping tool can be obtained free of charge from your local Siemens I BT office. The standardized transport protocol UDP is used for BACnet, as it already has sufficient transport checking mechanisms available. Like TCP, UDP is a transport protocol, but unlike TCP it operates on a connectionless basis. BACnet devices may only work with the UDP port number permanently assigned to them. The UDP port number = 0xBAC0 is registered for BACnet. The Ethernet IP addressing consists of the IP address, the subnet mask and the default gateway. BACnet devices within one subnet have the same subnet address. In the case of devices with integral BBMD functionality (BACnet Broadcast Management Device), e.g. DESIGO automation stations, DHCP the automatic assignment of IP addresses in networks is generally not permitted. BACnet uses broadcast messages for the communication, i.e. all devices are addressed directly. As a rule, Ethernet IP routers block these broadcast messages so that a direct connection of Ethernet subnets is not possible. By using BBMD, broadcast messages can still be distributed. Page 1432 Mar 2008 Siemens ITS

5 Diagnostics Extensive diagnostics options are available via NCM, including: Operating status of the CP General diagnostics and statistics functions Connection diagnostics LAN controller statistics Diagnostic buffer Diagnostic options during operation Integration into network management systems through the support of SNMP V1 MIB-2 objects; this allows the current status of the Ethernet interface to be called up, e.g. for network management. Configuration STEP 7 V5.4 SP5 or higher and NCM S7 for Industrial Ethernet (supplied with STEP 7 V5.x) plus a hardware support package (HSP) are required for configuring the CP BACnet. The configuration data of the CP is stored on the CPU. This means a module can be replaced without a PG. An additional "Building Integration" runtime license (reference number S55372-C107) is required in order to use the BACnet protocol on the module. Please contact your regional Siemens representative for ordering the license. Technical specifications Page 1433 Mar 2008 Siemens ITS

6 Order No. 6FL CX10-0XE0 Product type designation CP BACnet Transmission rate Transmission rate at interface Mbit/s Interfaces 2 Number of electrical connections at interface 1 in accordance with Industrial 1 Ethernet for power supply 1 Design of electrical connection at interface 1 in accordance with Industrial RJ45 port Ethernet for power supply 2-pin plug-in terminal strip Supply voltage, current consumption, power loss Type of power supply DC Supply voltage 1 from backplane bus 5 V External 24 V Relative positive tolerance at 24 V DC 20 % Relative negative tolerance at 24 V DC 15 % Current consumed from backplane bus at 5 V DC, typical 0.2 A from external power supply at 24 V DC Page 1434 Mar 2008 Siemens ITS

7 - Typical 0.2 A Maximum Effective power loss 5.8 W Permitted ambient conditions Ambient temperature During operation 0 60 C During storage C During transport C Note - Relative humidity at 25 C without 95 % condensation during operation, maximum IP degree of protection IP20 Design, dimensions and weights Module format Compact module S7-300, single-width Width 40 mm Height 125 mm Depth 120 mm Net weight 0.22 kg Product properties, functions, components General Number of modules Per CPU, maximum 1 Page 1435 Mar 2008 Siemens ITS

8 Note Without BACnet protocol: Max. 8 per station Performance data Performance data Open communication Number of possible connections for open 8 communication by means of SEND/RECEIVE blocks, maximum Data volume As user data per TCP connection for open 8 KB communication by means of SEND/RECEIVE blocks, maximum As user data per UDP connection for open IE 2 KB communication by means of SEND/RECEIVE blocks, maximum Number of multicast stations 8 Performance data S7 communication Number of possible connections for S7 communication Maximum 4 For PG connections, maximum 2 For PG/OP connections, maximum 2 Note - Performance data Multiprotocol operation Number of active connections in multiprotocol 12 mode Page 1436 Mar 2008 Siemens ITS

9 Performance data BACnet BACnet/IP protocol is supported Product function BACnet device type AAC (Advanced Application Controller) Peer-to-peer between BACnet automation stations BBMD (BACnet Broadcast Management Device) Maximum number of BACnet I/O objects 800 Maximum number of BACnet objects, total Influence on the cycle time of the automation No effect system Required storage capacity of S7 CPU's main 4 KB memory Standard for BACnet Product functions Management, configuration, programming Product function: MIB support Protocol is supported SNMP v1 DCP LLDP Communication based on TCP/IP, BACnet server in accordance with EN 16484, Part 5 Page 1437 Mar 2008 Siemens ITS

10 Configuration software required Identification & Maintenance I&M0 - device-specific information I&M1 - higher-level designation/location designation Product functions Diagnostics Product function: Web-based diagnostics Product functions Switch Product feature: Switch Product function Switch-managed Configuration with STEP 7 Product functions Time Product function SICLOCK support Passing-on of time synchronization Protocol is supported NTP STEP 7 version V5.4 SP5 and higher plus HSP. An additional runtime license "Building Integration" (reference number S55372-C107) is required to use the BACnet protocol on the module. To order the license, please contact your regional Siemens partner. No No Page 1438 Mar 2008 Siemens ITS