The Parameter Data Block
3-8
FC 56
J31069-D0155-U001-A0-7618
Table 3-3
Variables in BEST
Variable
Description
command_start
True = Starts a command
init_run
True = New start of the interface module. The FC 56 is reset and the ASM is
parameterized again. All data and commands on the ASM are lost. This
bit must be set in the new start OB (OB 100) for every MOBY channel
or ASM.
FC 56 automatically performs an init_run after a failure of the
MOBY-ASM. The error error_MOBY = 0F is reported to the user.
Remember:
When a parameter data block is transferred from the programmer
to the SIMATIC, the init_run bit is preset with TRUE. This causes an
automatic new start for the ASM.
ASM_failure
True = The ASM has failed. This bit is set by the user in OB 122 (see
chapter 5.4). FC 56 then reports an error (error_code = H1 35) to the
user and interrupts a running command.
If OB 122 is not programmed by the user, the PLC assumes the
STOP state when an ASM fails.
FC56_active
FC 56 is processing a command. This variable is set when the command starts
(command_start = true) and remains active until:
S
FC 56 has received the last acknowledgment from ASM.
S
The Cancel bit was set.
S
An error message was reported from the ASM.
ANZ_next
This bit is set when the last command executed was a NEXT command.
ANZ_reset
This bit indicates that the last command executed was a RESET command. The
RESET command was started by the user with “init_run.”
ANZ_MDS_present
Indicates the presence of at least one MDS in the SLG’s transmission window.
Remember that when an init_run is being executed, the ANZ_MDS_present
indication disappears briefly when an MDS is permanently located in the
transmission window.
ANZ_DIR_change
Directory change
The checksums of the filehandler and those of the MDS to be processed are not
identical. The filehandler had to read the entire directory and FAT of the MDS
before executing the parameterized command. This increases command
Summary of Contents for MOBY FC 56
Page 12: ...Introduction 1 6 FC 56 J31069 D0155 U001 A0 7618 ...
Page 63: ...5 1 FC 56 J31069 D0155 U001 A0 7618 Sample Applications 5 ...
Page 80: ...Sample Applications 5 18 FC 56 J31069 D0155 U001 A0 7618 ...
Page 90: ...Entry Exit Check of an MDS in an SLG Field 6 10 FC 56 J31069 D0155 U001 A0 7618 ...
Page 94: ...System Configuration 7 4 FC 56 J31069 D0155 U001 A0 7618 ...
Page 100: ...Commissioning Guidelines 8 6 FC 56 J31069 D0155 U001 A0 7618 ...
Page 101: ...9 1 FC 56 J31069 D0155 U001 A0 7618 Error Messages and Trouble Shooting 9 ...
Page 152: ...Programming MOBY ASM on PROFIBUS DP V1 B 30 FC 56 J31069 D0155 U001 A0 7618 ...