Festo CPX-2AA-U-I, Электронное руководство

Страница: 68 / 228

2. Analogue input module CPX−2AE−U−I
2−24
Festo P.BE−CPX−AX−EN en 0503b
C h anne l p a r amete r s : Low e r l imit c h anne l x / Upp e r l imit c h anne l x
Function no. Lower limit: m = module number (0 ... 47)
4828 + m * 64 +
10
(channel 0, low byte)
4828 + m * 64 + 11 (channel 0, high byte)
4828 + m * 64 + 12 (channel 1, low byte)
4828 + m * 64 + 13 (channel 1, high byte)
Upper limit:
4828 + m * 64 +
14 (channel 0, low byte)
4828 + m * 64 + 15 (channel 0, high byte)
4828 + m * 64 + 16 (channel 1, low byte)
4828 + m * 64 + 17 (channel 1, high byte)
Description A lower as well as an upper limit value can be set for the individual channels of
the analogue input modules (see section 2.4.5).
With data format VZ + 15 bits linear scaled", the limits have the function of
scaling end values.
Bit Bit 0...7: high byte or low byte of the limit value
Values Presettings:
Lower limit = 0 (low byte = 0; high byte: 0)
Upper limit = 4095 (low byte = 255; high byte: 15)
Low byte:
0...255
High byte: 0...15
Remark If the input value is less than the parametrized lower limit or exceeds the
parametrized upper limit, an appropriate fault is displayed (providing the
relevant channel parameter Monitoring channel x monitoring lower limit" or
Monitoring channel x monitoring upper limit" is active).
The upper limit must always be more than the lower limit.
Modifications to the limits must be made in steps of 16 bits.
Permitted limits:
The limits are checked for validity during parametrizing. Invalid parametrizings
are not accepted the module uses the previous (last valid) parametrizings.
The permitted values depend on the parametrized data format (see section
2.4.5). If the module parameter Monitoring parametrizing faults" as well as the
relevant channel parameter Monitoring parametrizing faults" is set to active",
the relevant fault will be displayed.
Tab.2/16: Lower and upper limits channel x