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Accessibility: Wiring connections and I/O modules are easily accessible from the rear of the rack
8 x 54 x 39
Versatility: Compatible with a range of communication protocols
and natural gas engines
3 HE (4 HP
Yokogawa ALR121-S01 ALR121 Serial Communication Module Current Output Module Accessibility: Wiring connections and I/ODescription The Yokogawa ALR121 S01 module offers two serial communication ports, one for RS 422 and one for RS 485, enabling Modbus communication. This allows data in the Safety Control Station (SCS) to be accessed or modified by a Modbus master system, which operates independently from the SCS. Specifications Interface: RS 422 RS 485 (4 wire system) Connection Method: Point to point (RS 422) Multipoint (RS 485) Communication Function: Half duplex