Siemens SIMATIC S5 Manual page 66

Start-Up, Tests, and Diagnostics
3.4.2 The Types of FMA Services
The L2 interface of the S5-95U permits only the FMA services listed in Table 3-2.
Table 3-2. FMA Services Possible with the L2 Interface of the S5-95U
FMA Service
LAS_LIST_CREATE
FDL_STATUS
READ_VALUE
TIME_TTH_READ
MAC_EVENT
Some of the characteristics of the individual FMA services are summarized in Table 3-3.
FMA Service
Characteristics
FMA Service
LAS_LIST_CREATE
FDL_STATUS
READ_VALUE
TIME_TTH_READ
MAC_EVENT
As a prerequisite to using FMA services you must perform the following actions on the relevant
programmable controller:
• Define job number ANR=200 for calling up the L2-SEND and L2-RECEIVE function blocks, and
define the location of a status byte in DB1.
• Set parameters for the L2-SEND and L2-RECEIVE function blocks.
• Set up a data block for the service request and for the confirmation.
Section 3.4.3 describes how to assign parameters in DB1. Chapter 5 describes how to assign
parameters for L2-SEND and L2-RECEIVE.
3-12
Read out the list of all the active stations on the network.
Read the status of another station (e.g., "Station is passive"; or
"Station is active and in the token ring").
Read the updated bus parameters (e.g., TLN, BDR, TRT).
Read the token hold time still available when receiving the token.
Read out an event message (e.g., "cable short-circuit").
Table 3-3. Characteristics of FMA Services
FMA Service Can Be Used if the
S5-95U is
Active
X
X
X
X
X
S5-95U, SINEC L2
Function
FMA Request
Necessary?
Passive
X
X
EWA 4NEB 812 6112-02
X
X
X
X