*控制器和分布式站點(diǎn)之間的安全通訊和標(biāo)準(zhǔn)通訊在 PROFIBUS DP 和/或 PROFINET 上進(jìn)行。特殊開發(fā)的PROFIsafe支持在標(biāo)準(zhǔn)數(shù)據(jù)報(bào)文中傳送具有安全功能的用戶數(shù)據(jù)。無需其它硬件組件,例如特殊安全總線。所需的軟件既可以作為一個操作系統(tǒng)的擴(kuò)展功能集成在硬件組件中,也可以作為一個軟件塊裝載到 CPU 中。
操作模式
F-CPU 的安全功能包含在 CPU 的 F 程序中以及故障安全信號模塊中。信號模塊采用差異分析方法和測試信號注入技術(shù)來監(jiān)視輸入和輸出信號。CPU通過周期性自檢、命令測試以及基于邏輯和時間的程序執(zhí)行檢測,檢查控制器運(yùn)行的正確性。此外,通過“活躍標(biāo)志(sign-of-life)”請求,還可以對 I/O 進(jìn)行檢測。當(dāng)系統(tǒng)診斷出一個故障時,系統(tǒng)將進(jìn)入安全狀態(tài)。 運(yùn)行 CPU 315F-2 PN/DP 無需 F 運(yùn)行版*。
編程
CPU 315F-2 PN/DP 的編程方法與 SIMATIC S7 系統(tǒng)的編程方法相同。通過諸如 STEP 7 編程工具可創(chuàng)建非安全型用戶程序。
具有安全功能的 F 程序以 F_FBD 或 F-LAD 方式進(jìn)行連接,或利用 F 功能庫中的特殊功能數(shù)據(jù)塊進(jìn)行連接。使用 F FBD 或 F LAD 可提供跨系統(tǒng)的統(tǒng)一表示,因而簡化系統(tǒng)的組態(tài)和編程以及驗(yàn)收測試。無須使用其它工具,程序員就可以對安全型應(yīng)用進(jìn)行組態(tài)。
Technical Specifications
Order number
6ES7315-2FJ14-0AB0
CPU315F-2 PN/DP, 512 KB
General information
Engineering with
● Programming package
STEP 7 V 5.5 or higher, Distributed Safety V 5.4 SP4
Supply voltage
Rated value (DC)
● 24 V DC
Yes
Power loss
Power loss, typ.
4.65 W
Memory
Work memory
● integrated
512 kbyte
● Size of retentive memory for retentive data blocks
128 kbyte
Load memory
● Plug-in (MMC), max.
8 Mbyte
CPU processing times
for bit operations, typ.
0.05 µs
for word operations, typ.
0.09 µs
for fixed point arithmetic, typ.
0.12 µs
for floating point arithmetic, typ.
0.45 µs
Counters, timers and their retentivity
S7 counter
● Number
256
IEC counter
● present
Yes
S7 times
● Number
256
IEC timer
● present
Yes
Data areas and their retentivity
Flag
● Number, max.
2 048 byte
Address area
I/O address area
● Inputs
2 048 byte
● Outputs
2 048 byte
Process image
● Inputs, adjustable
2 048 byte
● Outputs, adjustable
2 048 byte
Time of day
Clock
● Hardware clock (real-time clock)
Yes
Operating hours counter
● Number
1
1. Interface
Interface type
Integrated RS 485 interface
Physics
RS 485
Functionality
● MPI
Yes
● PROFIBUS DP master
Yes
● PROFIBUS DP slave
Yes
● Point-to-point connection
No
DP master
● Number of DP slaves, max.
124
2. Interface
Interface type
PROFINET
Physics
Ethernet RJ45
Interface types
● Number of ports
2
Functionality
● MPI
No
● PROFINET IO Controller
Yes; Also simultaneously with IO-Device functionality
● PROFINET IO Device
Yes; Also simultaneously with IO Controller functionality
● PROFINET CBA
Yes
● PROFIBUS DP master
No
● PROFIBUS DP slave
No
Isochronous mode
Isochronous operation (application synchronized up to terminal)
Yes; Via PROFIBUS DP or PROFINET interface
Communication functions
PG/OP communication
Yes
Data record routing
Yes
Global data communication
● supported
Yes
S7 basic communication
● supported
Yes
S7 communication
● supported
Yes
S5 compatible communication
● supported
Yes; via CP and loadable FC
Open IE communication
● TCP/IP
Yes; via integrated PROFINET interface and loadable FBs
— Number of connections, max.
8
● ISO-on-TCP (RFC1006)
Yes; via integrated PROFINET interface and loadable FBs
— Number of connections, max.
8
● UDP
Yes; via integrated PROFINET interface and loadable FBs