ABB AC500 PLC, Hardware Manual, Page: 76 / 1315

Processor Module PM59x-ETH PM59x-
ARCNET
PM59x-ETH
PM59x-2ETH
Binary Min. 0.002
µ
s Min. 0.002
µ
s Min. 0.002
µ
s
Word Min. 0.004 µ s Min. 0.004 µ s Min. 0.004 µ s
Floating point Min. 0.004 µ s Min. 0.004 µ s Min. 0.004 µ s
Max. number of central inputs and outputs
(up to 7 exp. modules):
1 )
Digital inputs 224 224 224
Digital outputs 224 224 224
Analog inputs 112 112 112
Analog outputs 112 112 112
Max. number of central inputs and outputs
(10 exp. modules):
Digital inputs 320 320 320
Digital outputs 320 320 320
Analog inputs 160 160 160
Analog outputs 160 160 160
Number of decentralized inputs and out-
puts
Depends on the fieldbus used
(as an info on the CS31 bus: up to 31 stations with
up to 120 DI / 120 DO each)
Data backup Battery
Data buffering time at 25 ° C Typ. 3 years without power supply
Battery low indication Warning issued about 2 weeks before the state of
charge becomes critical
Real-time clock:
With battery back-up x x x
Accuracy Typ.
±
2 s / day
at 25 ° C
Typ.
±
2 s / day
at 25 ° C
Typ.
±
2 s / day
at 25 ° C
Program execution:
Cyclic x x x
Time-controlled x x x
Multitasking x x x
Password protection of user program x x x
Serial interface COM1:
Physical link Configurable for RS-232 or RS-485 (from 0.3 to
187.5 kB/s) pluggable terminal block, spring con-
nection for programming, as Modbus (master/
slave), as serial ASCII communication, as CS31
master
Connection
Usage
Serial interface COM2 (not for
PM5xy-2ETH models):
Physical link Configurable for RS-232 or RS-485 (from 0.3 to
187.5 kB/s) D-sub for programming, as Modbus
(master/slave), as serial ASCII communication
Connection
Usage
Integrated communication module:
Device Specifications
Processor Modules > AC500 (Standard)
2019/04/17 3ADR010121, 13, en_US 76