目录
S7-400H
4 系统手册, 12/2010, A5E00447391-07
5.9 PROFIBUS DP接口.............................................................................................................57
5.10 S7-400H CPU的参数总览 ...................................................................................................58
6
CPU 41x-H的特殊功能....................................................................................................................61
6.1 不使用存储卡更新固件 ........................................................................................................61
6.2 在RUN模式
下更新固件........................................................................................................62
6.3 读取服务数据.......................................................................................................................64
7
PROFIBUS DP模式下的S7–400H...................................................................................................65
7.1
CPU 41x–H作为PROFIBUS DP主站...................................................................................65
7.1.1
41xH CPU的DP地址区........................................................................................................65
7.1.2
CPU 41xH作为PROFIBUS DP主站.....................................................................................66
7.1.3 作为PROFIB
US DP主站运行的CPU 41xH的诊断 ...............................................................69
7.2 一致性数据 ..........................................................................................................................74
7.2.1 通讯块和功能的一致性 ........................................................................................................75
7.2.2 访问CPU的工作存储器........................................................................................................75
7.2.3
SFB 14“GET”或读变量和SFB 15“PUT”或写变量的一致性规则 ...........................................75
7.2.4 从DP标准从站一致性地读取数据和将数据一致性地写入到DP标准从站 ..............................76
7.2.5 不使用SFC 14 或SFC 15 进行一致性数据访问....................................................................77
8
S7400H的系统状态和运行状态 .......................................................................................................79
8.1
S7400H的系统状态和运行状态 ...........................................................................................79
8.2 简介.....................................................................................................................................79
8.3
S7400H的系统状态 .............................................................................................................81
8.4
CPU的运行状态...................................................................................................................82
8.4.1
STOP模式 ...........................................................................................................................84
8.4.2
STARTUP模式 ....................................................................................................................84
8.4.3
LINK-UP和UPDATE模式.....................................................................................................85
8.4.4
RUN模式 .............................................................................................................................85
8.4.5
HOLD模式...........................................................................................................................87
8.4.6
ERROR-SEARCH模式........................................................................................................87
8.5 自检.....................................................................................................................................88
8.6 时间响应..............................................................................................................................91
8.7
S7-400H系统中硬件中断的评估 ..........................................................................................92
9 链接和更
新 .....................................................................................................................................93
9.1 链接和更新的影响 ...............................................................................................................93
9.2 链接和更新的条件 ...............................................................................................................94
9.3 链接和更新顺序 ...................................................................................................................95
9.3.1 链接顺序..............................................................................................................................98